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Quantum cosmology
 
 
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In theoretical physics
Theoretical physics

Theoretical physics employs mathematical models and abstractions of physics in an attempt to explain experimental data taken of the natural world....
, quantum
Quantum

In physics, a quantum is an indivisible entity of a quantity that has the same units as the Planck constant and is related to both energy and momentum of elementary particles of matter and of photons and other bosons....
 cosmology
Physical cosmology

Physical cosmology, as a branch of astronomy, is the study of the largest-scale structures and dynamics of our universe and is concerned with fundamental questions about its formation and evolution....
 is a field attempting to study the effect of quantum mechanics
Quantum mechanics

Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the microscopic scale . Notable amongst these principles are both a dual wave-like and particle-like behavior of matter and radiation, and prediction of probabilities in situations where classical physics predicts certaintie...
 on the creation of the universe, or its early evolution, especially just after the Big Bang
Big Bang

The Big Bang is the physical cosmology model of the initial conditions and subsequent development of the universe supported by the most comprehensive and accurate explanations from current scientific method and observation....
. Despite many attempts, such as the Wheeler-deWitt equation
Wheeler-deWitt equation

In theoretical physics, the Wheeler-deWitt equation is a Functional derivative equation. It is ill defined in the general case, but very important in theoretical physics, especially in quantum gravity....
, the field remains a rather speculative branch of quantum gravity
Quantum gravity

Quantum gravity is the field of theoretical physics attempting to unify quantum mechanics, which describes three of the Fundamental interaction , with general relativity, the theory of the fourth fundamental force: Gravitation....
.

An important problem in this field is the origin of information
Information

Information as a Conveyed concept has a diversity of meanings, from everyday usage to technical settings. Generally speaking, the concept of information is closely related to notions of constraint, communication, control system, data, form, instruction, knowledge, Meaning , stimulation, pattern, perception, and knowledge representation....
 in the universe.








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In theoretical physics
Theoretical physics

Theoretical physics employs mathematical models and abstractions of physics in an attempt to explain experimental data taken of the natural world....
, quantum
Quantum

In physics, a quantum is an indivisible entity of a quantity that has the same units as the Planck constant and is related to both energy and momentum of elementary particles of matter and of photons and other bosons....
 cosmology
Physical cosmology

Physical cosmology, as a branch of astronomy, is the study of the largest-scale structures and dynamics of our universe and is concerned with fundamental questions about its formation and evolution....
 is a field attempting to study the effect of quantum mechanics
Quantum mechanics

Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the microscopic scale . Notable amongst these principles are both a dual wave-like and particle-like behavior of matter and radiation, and prediction of probabilities in situations where classical physics predicts certaintie...
 on the creation of the universe, or its early evolution, especially just after the Big Bang
Big Bang

The Big Bang is the physical cosmology model of the initial conditions and subsequent development of the universe supported by the most comprehensive and accurate explanations from current scientific method and observation....
. Despite many attempts, such as the Wheeler-deWitt equation
Wheeler-deWitt equation

In theoretical physics, the Wheeler-deWitt equation is a Functional derivative equation. It is ill defined in the general case, but very important in theoretical physics, especially in quantum gravity....
, the field remains a rather speculative branch of quantum gravity
Quantum gravity

Quantum gravity is the field of theoretical physics attempting to unify quantum mechanics, which describes three of the Fundamental interaction , with general relativity, the theory of the fourth fundamental force: Gravitation....
.

An important problem in this field is the origin of information
Information

Information as a Conveyed concept has a diversity of meanings, from everyday usage to technical settings. Generally speaking, the concept of information is closely related to notions of constraint, communication, control system, data, form, instruction, knowledge, Meaning , stimulation, pattern, perception, and knowledge representation....
 in the universe.

See also

  • Multiple histories
    Multiple histories

    The concept of multiple histories is closely related to the many-worlds interpretation of quantum mechanics. In the same way that the many-worlds interpretation regard possible futures as having a real existence of their own, the theory of multiple histories reverses this in time to regard the many possible past histories of a given event as...


  • Here's a layman's explanation of Quantum Cosmology posted on the Cambridge website: http://www.damtp.cam.ac.uk/user/gr/public/qg_qc.html

Links

  • by D.L. Wiltshire
  • by Alexander Vilenkin
  • by Philip V. Fellman, Jonathan Vos Post, Christine M. Carmichael, Andrew Carmichael Post
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  • by T. Christodoulakis
  • by P. Pedram, S. Jalalzadeh, S. S. Gousheh
  • by S. Robles-Perez, Y. Hassouni, P. F. Gonzalez-Diaz
  • by S. Capozziello, V.I. Man'ko, G. Marmo, C. Stornaiolo
  • by Abhay Ashtekar
  • by Abhay Ashtekar
  • by Martin Bojowald
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  • by Martin Bojowald, Kevin Vandersloot
  • by Tristan Catelin-Jullien, Costas Kounnas, Herve Partouche, Nicolaos Toumbas
  • by L.A. Glinka