A holographic description of negative energy states

Lee, Da-Shin; Yeh, Chen-Pin

doi:10.1007/jhep09(2016)059

Cited by 5 publications

(4 citation statements)

References 61 publications

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“…We emphasize that these expressions hold for any holographic CFT and therefore suggest the following: the hyperbolic black holes at zero temperature provide a holographic description of a flat superposition of the modular vacua of the ground state of a CFT reduced to a ball (16). This is in line with the field theory discussion of Sec.…”

Section: Holography Of the Modular Vacuasupporting

confidence: 80%

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Holography of negative energy states

Rosso

2019

Phys. Rev. D

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Quantum states with negative energy densities have been long known to exist in quantum field theories. We explore the structure of such states for holographic theories using quantum information theory tools and show how certain negative energy states are naturally captured by the thermodynamics of black holes with hyperbolic horizon at zero temperature, suggesting that they provide a dual description of those states. Our results give a satisfying field theory understanding of the distinct thermodynamics of such black holes.

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Section: Holography Of the Modular Vacuasupporting

confidence: 80%

“…In this paper, we focus on their holographic description (see Ref. [16] for previous work). To do so, we use quantum information theory techniques which have been previously shown to be very useful in the study of negative energy [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Holography of negative energy states

Rosso

2019

Phys. Rev. D

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“…At present we are not certain as to what will work and what will not, 17 although perhaps investigating CFT states prepared by stress-tensor insertions, e.g. as in [32], or investigating DSNE expectation values in holographic descriptions of negative energy states described in [33] will provide a nontrivial first check. For now we will leave…”

Section: Interactionsmentioning

confidence: 99%

Semi-local Bounds on Null Energy in QFT

Fliss

Freivogel

2022

SciPost Phys.

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We investigate whether the null energy, averaged over some region of spacetime, is bounded below in QFT. First, we use light-sheet quantization to prove a version of the ``Smeared Null Energy Condition" (SNEC) proposed in [1], applicable for free and super-renormalizable QFT's equipped with a UV cutoff. Through an explicit construction of squeezed states, we show that the SNEC bound cannot be improved by smearing on a light-sheet alone. We propose that smearing the null energy over two null directions defines an operator that is bounded below and independent of the UV cutoff, in what we call the ``Double-Smeared Null Energy Condition," or DSNEC. We indicate schematically how this bound behaves with respect to the smearing lengths and argue that the DSNEC displays a transition when the smearing lengths are comparable to the correlation length.

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“…Previous works initializing the ideas on AdS and Lifshitz spacetime include [15,16,17,18,19]. While other relevant works include [20,21,22,23,24,25,26,27,28,29,30]. In the next section we will study the fluctuations and the energy loss of a moving heavy quark.…”

Section: Fluctuation and Dissipation In Holography: A Unified Approachmentioning

confidence: 99%

Stochastic Motion of Heavy Quarks in Holography: A Theory-Independent Treatment

Giataganas¹

2018

Proceedings of Corfu Summer Institute 2017 "Schools and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2017)

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Stochastic dynamics play a central role in strongly coupled phenomena. We present and review a theory independent approach in holography to study such phenomena. We firstly argue that the heavy quark diffusion occurs in realistic strongly coupled systems. Then we analyze the quantum and thermal fluctuation, dissipation and the corresponding Brownian motion of a heavy particle in such environments for a wide class of theories. The holographic study is based on the properties of the straight string fluctuations. The observables and coefficients associated with the stochastic motion depend on a single parameter which encodes the properties of the different theories. Moreover, certain Dp-brane fluctuations can be mapped one-to-one to the string fluctuations and therefore the stochastic brane observables can be read from the string ones. Then we review the Langevin diffusion of a moving heavy quark in generic thermal holographic theories. The analysis is based on the properties of the trailing string and its fluctuations. The string world-sheet has a black hole horizon and the quark feels an effective temperature different than the environmental one. The formulas of the effective temperature, the drag force on the particle and the Langevin coefficients are given in terms of the background metric elements readily applicable to any theory. At the end we comment on the backreaction effects on the medium and present results of the Monte Carlo simulations. arXiv:1805.09011v1 [hep-th]

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A holographic description of negative energy states

Cited by 5 publications

References 61 publications

Holography of negative energy states

Holography of negative energy states

Semi-local Bounds on Null Energy in QFT

Stochastic Motion of Heavy Quarks in Holography: A Theory-Independent Treatment

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