Results 51 to 60 of about 71,617 (299)
Black-Hole Uncertainty Entails an Intrinsic Time Arrow. a Note on the Hawking-Penrose Controversy [PDF]
, 1999 Any theory that states that the basic laws of physics are time-symmetric must be strictly deterministic. Only determinism enables time reversal of entropy increase. A contradiction therefore arises between two statements of Hawking.
't Hooft +21 more
core +4 more sources
Comment on `Quantum resolution to the arrow of time dilemma' [PDF]
, 2009 Recently, a substantial amount of debate has grown up around a proposed quantum resolution to the `arrow of time dilemma' that is based on the role of classical memory records of entropy-decreasing events.
Jennings, David, Rudolph, Terry
core +2 more sources
The holographic space-time and black hole remnants as dark matter
Physics Letters B, 2022 The holographic space-time approach to inflation provides a well defined and self-contained framework to study the early universe. Based on a quasi-local quantum gravity theory generalizing string theory beyond AdS backgrounds, it addresses fundamental ...
Aurélien Barrau
doaj +1 more source
Vacuum structure for expanding geometry [PDF]
, 1999 We consider gravitational wave modes in the FRW metrics in a de Sitter phase and show that the state space splits into many unitarily inequivalent representations of the canonical commutation relations.
Albrecht A +33 more
core +3 more sources
Deflation at Turnaround for Oscillatory Cosmology [PDF]
, 2006 It is suggested that dark energy in a brane world can help reconcile an infinitely cyclic cosmology with the second law of thermodynamics. A cyclic cosmology is described, in which dark energy with constant equation of state leads to a turnaround at ...
Baum, Lauris, Frampton, Paul H.
core +5 more sources
About some Entropy Aspects of Dissipative Systems [PDF]
Theoretical and Applied Economics, 2006 This paper is aspiring to get a logical explanation on the entropy velocity (i.e. on the entropy acceleration) in a Universe “endowed” with a dissipative system.
Emil Dinga
doaj +1 more source
Vacuum Structure and the Arrow of Time
, 2012 We find ourselves in an extended era of entropy production. Unlike most other observations, the arrow of time is usually regarded as a constraint on initial conditions. I argue, however, that it primarily constrains the vacuum structure of the theory.
A. Linde +4 more
core +2 more sources
Entanglement and the Thermodynamic Arrow of Time [PDF]
, 2010 We discuss quantum entanglement in the context of the thermodynamic arrow of time. We review the role of correlations in entropy-decreasing events and prove that the occurrence of a transformation between two thermodynamic states constitutes a new type ...
A. Peres +7 more
core +2 more sources
Fidelity Mechanics: Analogues of the Four Thermodynamic Laws and Landauer’s Principle
Entropy, 2022 Fidelity mechanics is formalized as a framework for investigating critical phenomena in quantum many-body systems. Fidelity temperature is introduced for quantifying quantum fluctuations, which, together with fidelity entropy and fidelity internal energy,
Huan-Qiang Zhou +2 more
doaj +1 more source
Geometrical bounds on irreversibility in open quantum systems [PDF]
, 2018 Clausius inequality has deep implications for reversibility and the arrow of time. Quantum theory is able to extend this result for closed systems by inspecting the trajectory of the density matrix on its manifold.
Barbieri, Marco +8 more
core +2 more sources