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Attempts to develop a quantum mechanical theory of cosmology
Quantum cosmology is the attempt in theoretical physics to develop a quantum theory of the universe. This approach attempts to answer open questions of
Quantum_cosmology
Finite, symmetry-reduced model of loop quantum gravity
Loop quantum cosmology (LQC) is a finite, symmetry-reduced model of loop quantum gravity (LQG) that predicts a "quantum bridge" between contracting and
Loop_quantum_cosmology
Model for the origin of the universe
found diverse support in works based on loop quantum gravity. In loop quantum cosmology, a branch of loop quantum gravity, the big bounce was first discovered
Big_Bounce
Theory of rapid universe expansion
variations due to quantum fluctuations in the original small smooth patch of the universe. Inflation resolves several problems in Big Bang cosmology that were
Cosmic_inflation
Concept in cosmology
zero-point energy suggested by quantum field theory? More unsolved problems in physics In cosmology, the cosmological constant problem or vacuum catastrophe
Cosmological_constant_problem
Hypothetical vacuum, less stable than true vacuum
filaments with few or no galaxies Quantum cosmology – Attempts to develop a quantum mechanical theory of cosmology Quantum fluctuation – Random change in
False_vacuum
Hypothetical scenario for the ultimate fate of the universe
Loop quantum cosmology is a model of the universe that proposes a "quantum-bridge" between expanding and contracting universes. In this model quantum geometry
Big_Crunch
Philosophical argument for the existence of God
incorporates both philosophy and science, encompassing such fields as cosmology, quantum mechanics, philosophy of science, relativistic physics and philosophy
Kalam_cosmological_argument
Indian-American theoretical physicist
theoretical physicist known for his work on general relativity, quantum gravity, and cosmology. He is Atherton Professor, Evan Pugh University Professor, and
Abhay_Ashtekar
Value representing energy density of space
physical cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ), alternatively called Einstein's cosmological constant
Cosmological_constant
Religious explanation
of religious cosmology is more wide-ranging and speculative than a strictly scientific cosmology (physical cosmology and quantum cosmology) in that religious
Religious_cosmology
Theory of quantum gravity merging quantum mechanics and general relativity
that has been advanced as a direct result of loop quantum gravity is called loop quantum cosmology (LQC). LQC advances the study of the early universe
Loop_quantum_gravity
Interpretation of quantum mechanics
S2CID 208006050. Gell-Mann, M.; Hartle, J. B. (1990). "Quantum mechanics in the light of quantum cosmology". In Zurek, W. H. (ed.). Complexity, Entropy, and
Many-worlds_interpretation
Theories in particle physics and cosmology
put weak limits on large extra dimensions. Kaluza–Klein theory Loop quantum cosmology "Session D9 - Experimental Tests of Short Range Gravitation". flux
Brane_cosmology
Hypothetical group of multiple universes
relativity and quantum field theory Impossible world – Term used to model separate circumstances that cannot exist together Measure problem (cosmology) – Concept
Multiverse
Description of gravity using discrete values
of quantum cosmology Quadratic gravity Regge calculus Shape Dynamics String-nets and quantum graphity Supergravity Twistor theory Canonical quantum gravity
Quantum_gravity
Theorem in physical cosmology
The Borde–Guth–Vilenkin (BGV) theorem is a theorem in physical cosmology which deduces that any universe that has, on average, been expanding throughout
Borde–Guth–Vilenkin_theorem
American physicist (1939–2023)
relativity, astrophysics, and interpreting quantum mechanics. He was one of the pioneers of quantum cosmology. He joined the faculty of the University of
James_Hartle
Interpretation of quantum mechanics
concept to quantum cosmology, and the interpretation has been applied to the EPR paradox, revealing not only a peaceful co-existence between quantum mechanics
Relational_quantum_mechanics
Idea of multiple histories into a complete unified theory
independent history". Consistent histories Hartle–Hawking state Multiverse Quantum cosmology Ball, Philip (2006-06-21). "Hawking rewrites history... backwards"
Top-down_cosmology
Unsolved problem in physics
(1999). "Phenomenology, astrophysics and cosmology of theories with submillimeter dimensions and TeV scale quantum gravity". Physical Review D. 59 (8) 086004
Hierarchy_problem
Quantum state of the entire universe
many-worlds interpretation of quantum mechanics, and finds applications in quantum cosmology. It evolves deterministically according to a wave equation. The concept
Universal_wave_function
Branch of physics that studies mathematical models of the universe
observational astrophysics, general relativity, quantum mechanics, and plasma physics. Modern cosmology developed along tandem tracks of theory and observation
Physical_cosmology
Description of physical properties at the atomic and subatomic scale
disciplines, including quantum chemistry, quantum biology, quantum field theory, quantum technology, and quantum information science. Quantum mechanics can describe
Quantum_mechanics
Proposal concerning the state of the universe prior to the Planck epoch
state, also known as the no-boundary wave function, is a cosmological model that applies quantum mechanics to the Big Bang. It is named after James Hartle
Hartle–Hawking_proposal
Formulation of general relativity
The problem of quantum cosmology is that the physical states that solve the constraints of canonical quantum gravity represent quantum states of the entire
Canonical_quantum_gravity
Theory or model concerning the origin of the universe
times. Thus modern cosmogony is not generally a consequence of modern cosmology theories. Cosmic inflation together with the Big Bang model are widely
Cosmogony
American theoretical physicist (born 1940)
research interests are string theory, quantum field theory, quantum statistical mechanics and quantum cosmology. He is a member of the US National Academy
Leonard_Susskind
French physicist and philosopher
Bogoliubov Prize in theoretical physics for his research on quantum black holes and primordial cosmology. He was awarded the 2012 European Thibaud prize in subatomic
Aurélien_Barrau
American philosopher (1942–1996)
particular the foundations of quantum mechanics, the de Broglie–Bohm theory and quantum field theory and relations to quantum cosmology. Robert Weingard: A philosopher
Robert_Weingard
Cosmological models involving indefinite, self-sustaining cycles
Chapel Hill. Other cyclic models include conformal cyclic cosmology and loop quantum cosmology. Cyclic models regained attention by the mid 2020s, when
Cyclic_model
Hypothetical physical concept
group methods and on the lattice, and applied in cosmology, particle physics, black hole physics, and quantum gravity. Whereas overwhelming numerical evidence
Theory_of_everything
Approach to quantum gravity using discrete spacetime
percolation models of causal set cosmology;Class. Quantum Grav. 23, 1381-1390 (2006); arXiv:gr-qc/0504069v1; (Cosmology, Dynamics, Observables) M. Droste
Causal_sets
Cosmological model in which the observable universe is the interior of a black hole
A black hole cosmology, or Schwarzschild cosmology, is a cosmological model in which the observable universe is the interior of a black hole. During gravitational
Black_hole_cosmology
Belgian cosmologist (b. 1975)
to Einstein's gravitational waves. Hertog worked in the field of quantum cosmology and string theory with James Hartle and Stephen Hawking. In 2011,
Thomas_Hertog
German cosmologist and theoretical physicist (born 1952)
general consistent quantum cosmological perturbation theory. Since 2006, Mukhanov is the Scientific Director of the Journal of Cosmology and Astroparticle
Viatcheslav_Mukhanov
Models of the universe which deviate from then-current scientific consensus
A non-standard cosmology is any physical cosmological model of the universe that was, or still is, proposed as an alternative to the then-current standard
Non-standard_cosmology
Set of mathematical concepts in quantum gravity
In quantum gravity, quantum geometry is the set of mathematical concepts that generalize geometry to describe physical phenomena at distance scales comparable
Quantum_geometry
Area of physical and philosophical debate
interpretation of quantum mechanics is an attempt to explain how the mathematical theory of quantum mechanics might correspond to experienced reality. Quantum mechanics
Interpretations of quantum mechanics
Interpretations_of_quantum_mechanics
Physical theory of the cosmos
described and modeled by the lambda-CDM model of cosmology, which uses the independent frameworks of quantum mechanics and general relativity. There are no
Big_Bang
Topological structure in loop quantum gravity
of quantum gravity. These structures are employed in loop quantum gravity as a version of quantum foam. The covariant formulation of loop quantum gravity
Spin_foam
Condition in which spacetime itself breaks down
tightly curved interior of the wormhole. Bojowald, Martin (2008). "Loop Quantum Cosmology". Living Reviews in Relativity. 11 (1) 4. Bibcode:2008LRR....11..
Gravitational_singularity
Extension of quantum field theory to curved spacetime
define a generalized quantum field theory to describe the behavior of quantum matter within that spacetime. For non-zero cosmological constants, on curved
Quantum field theory in curved spacetime
Quantum_field_theory_in_curved_spacetime
Hypothetical approach to quantum gravity with emergent spacetime
portal Asymptotic safety in quantum gravity Causal sets Fractal cosmology Loop quantum gravity 5-cell Planck scale Quantum gravity Regge calculus Simplex
Causal dynamical triangulation
Causal_dynamical_triangulation
Theory of fundamental physics
"Logarithmic nonlinearity in theories of quantum gravity: Origin of time and observational consequences". Gravitation and Cosmology. 16 (4): 288–297. arXiv:0906.4282
Superfluid_vacuum_theory
Quantum mechanical system that interacts with a quantum-mechanical environment
information science, quantum thermodynamics, quantum cosmology, quantum biology, and semi-classical approximations. Open quantum systems are sometimes
Open_quantum_system
German physicist
He works on loop quantum gravity and physical cosmology and is credited with establishing the sub-field of loop quantum cosmology. Presently: Professor
Martin_Bojowald
Symmetry between bosons and fermions
nuclear physics, optics, stochastic dynamics, astrophysics, quantum gravity, and cosmology. Supersymmetry has also been applied to high-energy physics
Supersymmetry
Natural number
PMID 33692126. Joel Primack; Nancy E. Abrams. "In A Beginning...Quantum Cosmology and Kabbalah" (PDF). Archived from the original (PDF) on 2022-10-09
42_(number)
Hypothetical force carrier particle connected to dark matter
presence of signal photon in the cavity is to amplify the cavity field with a quantum limited amplifier. This method is prevalent in the search for axion dark
Dark_photon
Modern theory of gravitation that combines supersymmetry and general relativity
natural way. Like all covariant approaches to quantum gravity, supergravity contains a spin-2 field whose quantum is the graviton. Supersymmetry requires the
Supergravity
galactic gasses Martin Bojowald (1973–) studied loop quantum gravity and established loop quantum cosmology Hermann Bondi (1919–2005) developed the steady-state
List_of_cosmologists
This is a list of notable textbooks on classical mechanics and quantum mechanics arranged according to level and surnames of the authors in alphabetical
List of textbooks on classical mechanics and quantum mechanics
List_of_textbooks_on_classical_mechanics_and_quantum_mechanics
Cosmological model
Conformal cyclic cosmology (CCC) is a speculative cyclocosmic cosmological model in the framework of general relativity, proposed by the theoretical physicist
Conformal_cyclic_cosmology
Process by which a quantum system takes on a definitive state
B. "The quantum mechanics of cosmology." Notes from the lectures by the author at the 7th Jerusalem Winter School 1990 on Quantum Cosmology and Baby
Wave_function_collapse
2009 film by Kunihiko Yuyama
return Arceus its life-giving jewel and attacked it. Through loop quantum cosmology, the spacial distortions caused by Arceus's awakening leads to the
Pokémon: Arceus and the Jewel of Life
Pokémon:_Arceus_and_the_Jewel_of_Life
Quantum state with the lowest possible energy
In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy
Quantum_vacuum_state
Greek physicist (born 1971)
physicist and design engineer. She has worked in quantum gravity, quantum mechanics and quantum cosmology, technological evolution in complex systems, embodied
Fotini_Markopoulou-Kalamara
Open question in particle physics
is not associated with an independent mass, but instead is a mixture (quantum superposition) of all three mass eigenstates. Mathematically, the flavor
Neutrino_mass_hierarchy
Brazilian physicist and philosopher
philosopher with contributions to the foundations of quantum mechanics, quantum cosmology, and quantum cognition. Dr. de Barros received his PhD in Physics
Jose_Acacio_de_Barros
American theoretical physicist (born 1945)
His research interests include black holes, general relativity, quantum cosmology, relativistic astrophysics and time travel. As of 2024, he is a Professor
Ronald_Mallett
Attempt to find a consistent theory of quantum gravity
sets Critical phenomena Euclidean quantum gravity Fractal cosmology Functional renormalization group Loop quantum gravity Perturbative renormalization
Asymptotic_safety
Theory of gravitation as curved spacetime
causal sets, twistor models or the path integral based models of quantum cosmology. All candidate theories still have major formal and conceptual problems
General_relativity
Theories trying to extend known physics
Dark matter. Assuming that general relativity and Lambda CDM are true, cosmological observations show that the Standard Model explains about 5% of the mass-energy
Physics beyond the Standard Model
Physics_beyond_the_Standard_Model
Phenomenon resulting from the superposition of two waves
addition to the classical wave model for understanding optical interference, quantum matter waves also demonstrate interference. The above can be demonstrated
Wave_interference
Hypothesis that the total amount of energy in the universe is exactly zero
Enough to ensure that everything adds up to zero. Some research in quantum cosmology provide a concrete realization of the zero energy universe hypothesis
Zero-energy_universe
Unified field theory
S. (2006). Five-Dimensional Physics: Classical and Quantum Consequences of Kaluza–Klein Cosmology. Singapore: World Scientific. Bibcode:2006fdpc.book
Kaluza–Klein_theory
Theory of fractal structure in the universe
In physical cosmology, fractal cosmology is a set of minority cosmological theories which state that the distribution of matter in the Universe, or the
Fractal_cosmology
Computer hardware technology that uses quantum mechanics
A quantum computer is a computer that represents and processes information using quantum states. Quantum computations exploit phenomena such as superposition
Quantum_computing
Theory of gravity
toward the resolution of incompatibilities between general relativity and quantum mechanics. Shape dynamics is dynamically equivalent to the canonical formulation
Shape_dynamics
Overview of the scientific field of astronomy
Physical cosmology – origin and evolution of the universe as a whole. The study of cosmology is theoretical astrophysics at its largest scale. Quantum cosmology
Outline_of_astronomy
Branch of physics seeking to explain chaotic dynamical systems in terms of quantum theory
Quantum chaos is a branch of physics focused on how chaotic classical dynamical systems can be described in terms of quantum theory. The primary question
Quantum_chaos
Formulation of quantum mechanics
polymer physics, quantum field theory, string theory and cosmology. In physics, it is a foundation for lattice gauge theory and quantum chromodynamics.
Path-integral_formulation
American philosopher (1952–2020)
existence of God from Quantum Cosmology, General Relativity, Big Bang Cosmology, Evil Natural Laws, and Hartle-Hawking Cosmology. He engaged in many debates
Quentin_Smith
Approximation in the study of quantum gravity phase spaces
origin of universe as a bubble in quantum cosmological theory. Pinto-Neto, N.; Fabris, J. C. (2013-06-12). "Quantum cosmology from the de Broglie–Bohm perspective"
Minisuperspace
Fringe hypothesis
The quantum mind or quantum consciousness is a group of hypotheses proposing that local physical laws and interactions from classical mechanics or connections
Quantum_mind
Violation of charge-parity symmetry in particle physics and cosmology
opened the door to questions still at the core of particle physics and of cosmology today. The lack of an exact CP-symmetry, but also the fact that it is
CP_violation
Philosopher
and quantum cosmology, Philosophy of Science, vol. 63, September 1996, pp. 470–474, abstract Craig Callender, Robert Weingard: Bohmian cosmology and the
Craig_Callender
Indian-American black hole physicist
black holes, and quantum gravity. He has also made contributions in the area of black hole perturbation theory, loop quantum cosmology, singularities and
Gaurav_Khanna_(physicist)
Defunct American particle accelerator at Fermilab in Illinois (1983–2011)
(2,0) superconformal field theory Noncommutative quantum field theory Quantum cosmology Brane cosmology String theory Superstring theory M-theory Mathematical
Tevatron
Physics laboratory in Assergi, Italy
(2,0) superconformal field theory Noncommutative quantum field theory Quantum cosmology Brane cosmology String theory Superstring theory M-theory Mathematical
Laboratori Nazionali del Gran Sasso
Laboratori_Nazionali_del_Gran_Sasso
English theoretical physicist (1942–2018)
of cosmology explained by a union of the general theory of relativity and quantum mechanics. He supported the many-worlds interpretation of quantum mechanics
Stephen_Hawking
Interpretation of quantum mechanics
ingredient of quantum mechanics. Consistent histories allows predictions related to the state of the universe needed for quantum cosmology. The interpretation
Consistent_histories
Quantum field theory of electromagnetism
observation value. This is called the cosmological constant problem or vacuum catastrophe. The first formulation of a quantum theory describing radiation and
Quantum_electrodynamics
Comprehensive physical model
Particles, Strings and Cosmology – The Pran Nath Festschrift – Pascos 2004. Tenth International Symposium on Particles, Strings and Cosmology – PaSCos 2004. Boston
Grand_Unified_Theory
Force resulting from the quantisation of a field
in a cosmological constant that is many orders of magnitude larger than observed. However, since we do not yet have any fully coherent quantum theory
Casimir_effect
Overview of and topical guide to space science
Chemical cosmology - study of the chemical composition of matter in the universe and the processes that led to those compositions. Quantum cosmology – the
Outline_of_space_science
American theoretical physicist (born 1955)
naturalism. His research interests also include cosmology, elementary particle theory, the foundations of quantum mechanics, and theoretical biology. Smolin
Lee_Smolin
Theories about the end of the universe
The ultimate fate of the universe is a topic in physical cosmology, whose theoretical restrictions allow possible scenarios for the evolution of the universe
Ultimate_fate_of_the_universe
Cryptography based on quantum mechanical phenomena
Quantum cryptography is the exploiting of quantum-mechanical properties such as quantum entanglement, measurement disturbance, no-cloning theorem, and
Quantum_cryptography
Study of the universe
Cosmology (from Ancient Greek κόσμος (cosmos) 'the universe, the world' and -λογία (logia) 'study of') is the study of the nature of the universe, the
Cosmology
In particle physics, the history of quantum field theory starts with its creation by Paul Dirac, when he attempted to quantize the electromagnetic field
History of quantum field theory
History_of_quantum_field_theory
Theoretical physicist, musician
on the study of electric time in quantum cosmology. The paper formulated and studied new possibilities of the quantum behavior of space-time. Alexander
Stephon_Alexander
Italian theoretical physicist and writer (born 1956)
finds applications in quantum cosmology, spinfoam cosmology and quantum black hole physics. In his 2004 book, Quantum Gravity, Rovelli developed a formulation
Carlo_Rovelli
Theory extending Einstein gravity
alternatives to general relativity. It has been suggested that consistency with quantum chromodynamics requires these additional quadratic terms. The theory was
Quadratic_gravity
Quantum mechanics thought experiment
Quantum suicide is a thought experiment in quantum mechanics and the philosophy of physics. Purportedly, it can falsify any interpretation of quantum
Quantum suicide and immortality
Quantum_suicide_and_immortality
Mexican physicist
non-commutativity and black holes within the approach known as Loop quantum gravity and to loop quantum cosmology. Profile and research at the UNAM site. Abstract of
Alejandro_Corichi
Mathematics of a particle physics model
The Standard Model of particle physics is a gauge quantum field theory containing the internal symmetries of the unitary product group SU(3) × SU(2) × U(1)
Mathematical formulation of the Standard Model
Mathematical_formulation_of_the_Standard_Model
interpretation "Cosmological interpretations", such as that proposed by Anthony Aguirre and Max Tegmark, in which the wavefunction for a quantum system describes
Minority interpretations of quantum mechanics
Minority_interpretations_of_quantum_mechanics
Simplest supersymmetric extension to the Standard Model
hierarchy problem. The Higgs boson mass of the Standard Model is unstable to quantum corrections and the theory predicts that weak scale should be much weaker
Minimal Supersymmetric Standard Model
Minimal_Supersymmetric_Standard_Model
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