# Bekenstein Entropy

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### Bekenstein-Hawking Entropy And Strange Metals

We examine models of fermions with infinite-range interactions which realize non-Fermi liquids with a continuously variable U(1) charge density $\mathcal{Q}$, and a non-zero entropy density $\mathcal{S}$ at vanishing temperature. Real time correlators of operators carrying U(1) charge $q$ at a low temperature $T$ are characterized by a $\mathcal{Q}$-dependent frequency $ω_{\mathcal{S}} = (q \, T/\hbar) (\partial \mathcal{S}/\partial{\mathcal{Q}})$ which determines a spectral asymmetry. We show that the correlators match precisely with those of the AdS$_2$ horizons of extremal charged black holes. On the black hole side, the matching employs $\mathcal{S}$ as the Bekenstein-Hawking entropy density, and the laws of black hole thermodynamics which relate $(\partial{\mathcal{S}}/\partial{\mathcal{Q}})/(2 π)$ to the electric field strength in AdS$_2$. The fermion model entropy is computed using the microscopic degrees of freedom of a UV complete theory without supersymmetry. On the black hole side, the matching employs \mathcal{S} as the Bekenstein-Hawking entropy density, and the laws of black hole thermodynamics which relate ... [ReadMore..]

### Entropy | Free Full-Text | Bekenstein's Entropy Bound-Particle ...

Bekenstein's Entropy Bound-Particle Horizon Approach to Avoid the Cosmological Singularity ... Author to whom correspondence should be addressed. Entropy 2020, 22 ... [ReadMore..]

### Quantum Gravity Pioneer | Nature Physics

Oct 1, 2015 ... Bekenstein thus proposed an entropy bound given by a system's energy and radius, arguing that ordinary matter such as teacups cannot have too ... [ReadMore..]

### Bekenstein-Hawking Entropy - An Overview | ScienceDirect Topics

An important black hole observable is the Bekenstein–Hawking (BH) entropy, which is proportional to the area of the event horizon. For the 3-brane solution ... [ReadMore..]

### Microscopic Origin Of The Bekenstein-Hawking Entropy Of ...

Oct 7, 2019 ... We present a holographic derivation of the entropy of supersymmetric asymptotically AdS5 black holes. We define a BPS limit of black hole ... [ReadMore..]

### In Memoriam: Jacob Bekenstein (1947–2015) And Black Hole Entropy

Chances are you've never heard of physicist Jacob Bekenstein, who devised a nifty formula for calculating a black hole's entropy. Here's why you should remember his name Aug 17, 2015 ... Enter Bekenstein and his seminal 1972 paper, which demonstrated that the entropy of a black hole is exactly proportional to the size of the ... [ReadMore..]

### Microscopic Origin Of The Bekenstein-Hawking Entropy - ScienceDirect

The Bekenstein-Hawking area-entropy relation SBH = A4 is derived for a class of five-dimensional extremal black holes in string theory by counting the… Jun 27, 1996 ... The Bekenstein-Hawking area-entropy relation S BH = A 4 is derived for a class of five-dimensional extremal black holes in string theory by ... [ReadMore..]

### Bekenstein's Entropy Bound And Variations Thereof - CERN ...

WSP Nov 14, 2020 ... I will summarize some of the developments that followed from Jacob Bekenstein's original proposal of a general bound on entropy. [ReadMore..]

### Spacetime - Is Bekenstein Entropy Limit Inconsistent With Universal ...

Oct 8, 2015 ... Your argument completely fails to take quantum mechanics into account. Consider an electron spin. If you measure the spin of an electron ... [ReadMore..]

The pages related to bekenstein entropy are also listed below:

### Link Between Hawking-Bekenstein Black Hole Entropy And ...

May 27, 2015 ... You are right - your problem lies in a lack of knowledge of the CFT side. This is quite complicated, so I'll only be able to give you hints ... [ReadMore..]

### Bekenstein-Hawking Entropy And Strange Metals

Black hole horizons have been shown to have characteristic entropies and temperatures. A new investigation shows similarities between the entropy of a black hole and a metallic state of high-temperature superconductors. Nov 13, 2015 ... On the black hole side, the matching employs S as the Bekenstein-Hawking entropy density and the laws of black hole thermodynamics that relate ( ... [ReadMore..]