scholarly journals Towards the generalized gravitational entropy for spacetimes with non-Lorentz invariant duals

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Qiang Wen
Keyword(s):  
Gravitational Entropy

The cooperation between loop quantum gravity and Entropic gravity

2021 ◽  
Author(s):  
Wen-Xiang Chen
Keyword(s):  
Boundary Condition ◽  
Quantum Gravity ◽  
Gravitational Potential ◽  
Complex Number ◽  
Loop Quantum Gravity ◽  
Gravitational Entropy ◽  
Entropic Gravity ◽  
New Form

In this paper, we show that bosons can produce bochromatic condensation without an energy layer when the boundary condition $\frac{T}{T_{c}}=z$(when z is complex) is preset. $r_{R}=zr_{A}\left(1-\frac{v^{2}}{c^{2}}\right)^{\frac{1}{2}}$(when z is A complex number). A new form of gravitational potential is obtained by combining the theory of gravitational entropy with loop quantum gravity.

scholarly journals Gravitational entropy of cosmic expansion

2014 ◽  
Vol 335 (6-7) ◽  
pp. 587-592 ◽  
Author(s):  
R. A. Sussman
Keyword(s):  
Cosmic Expansion ◽  
Gravitational Entropy

scholarly journals A NEW SPIN ON QUANTUM GRAVITY

2008 ◽  
Vol 17 (03n04) ◽  
pp. 567-570 ◽  
Author(s):  
MARK G. JACKSON ◽  
CRAIG J. HOGAN
Keyword(s):  
Quantum Gravity ◽  
Cosmological Constant ◽  
Laboratory Tests ◽  
Space Time ◽  
Quantum Spin ◽  
Inherent Property ◽  
Fundamental Level ◽  
Bose Statistics ◽  
Gravitational Entropy

We suggest that the (small but nonvanishing) cosmological constant, and the holographic properties of gravitational entropy, may both reflect unconventional quantum spin statistics at a fundamental level. This conjecture is motivated by the nonlocality of quantum gravity and the fact that spin is an inherent property of space–time. As an illustration we consider the "quon" model, which interpolates between Fermi and Bose statistics, and show that this can naturally lead to an arbitrarily small cosmological constant. In addition to laboratory tests, we briefly discuss the possible observable imprint on cosmological fluctuations from inflation.

scholarly journals Generalized gravitational entropy

2013 ◽  
Vol 2013 (8) ◽  
Author(s):  
Aitor Lewkowycz ◽  
Juan Maldacena
Keyword(s):  
Gravitational Entropy

Black Hole Entropy from Non-Commutative Geometry and Spontaneous Localisation

2019 ◽  
Author(s):  
Tejinder P. Singh ◽  
Palemkota Maithresh
Keyword(s):  
Black Hole ◽  
Black Hole Entropy ◽  
Entangled State ◽  
Schwarzschild Black Hole ◽  
Spectral Action ◽  
Black Hole Evaporation ◽  
Gravitational Action ◽  
Fluctuation Dissipation ◽  
Fluctuation Dissipation Theorem ◽  
Gravitational Entropy

In our recently proposed theory of quantum gravity, a black hole arises from the spontaneous localisation of an entangled state of a large number of atoms of space-time-matter [STM]. Prior to localisation, the non-commutative curvature of an STM atom is described by the spectral action of non-commutative geometry. By using the techniques of statistical thermodynamics from trace dynamics, we show that the gravitational entropy of a Schwarzschild black hole results from the microstates of the entangled STM atoms and is given (subject to certain assumptions) by the classical Euclidean gravitational action. This action, in turn, equals the Bekenstein-Hawking entropy (Area/$4{L_P}^2$) of the black hole. We argue that spontaneous localisation is related to black-hole evaporation through the fluctuation-dissipation theorem.

scholarly journals Large field inflation and gravitational entropy

2016 ◽  
Vol 93 (4) ◽  
Author(s):  
Nemanja Kaloper ◽  
Matthew Kleban ◽  
Albion Lawrence ◽  
Martin S. Sloth
Keyword(s):  
Large Field ◽  
Gravitational Entropy
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