H − T phase diagrams of a holographic p-wave superfluid

Yang, Yu-Ni; Xia, Chuan-Yin; Nie, Zhang-Yu; Zeng, Hua-Bi

doi:10.1007/jhep04(2022)013

Cited by 2 publications

(1 citation statement)

References 42 publications

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“…The second choice of the extended phase space is to enclose the black hole in a cavity in asymptotically flat space, on the wall of which the metric is fixed (i.e., with the Dirichlet boundary condition). [ 7–42 ] In this way, the wall acts as a reflecting boundary against the Hawking radiation and thus stabilizes the black hole. Hence, the function of the cavity is similar to the AdS space, as the gravitational potentials increase at large distances in both of these two cases, only with different boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

The Joule–Thomson and Joule–Thomson‐Like Effects of the Black Holes in a Cavity

2023

Fortschritte der Physik

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When a black hole is enclosed in a cavity in asymptotically flat space, an effective volume can be introduced, and an effective pressure can be further defined as its conjugate variable. By this means, an extended phase space is constructed in a cavity, which resembles that in the anti‐de Sitter (AdS) space in many aspects. However, there are still some notable dissimilarities simultaneously. In this work, the Joule–Thomson (JT) effect of the black holes, widely discussed in the AdS space as an isenthalpic (constant‐mass) process, is shown to only have cooling region in a cavity. On the contrary, in a constant‐thermal‐energy process (the JT‐like effect), there is only heating region in a cavity. Altogether, different from the AdS case, there is no inversion temperature or inversion curve in a cavity. Our work reveals the subtle discrepancy between the two different extended phase spaces that is sensitive to the specific boundary conditions.

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Section: Introductionmentioning

confidence: 99%

The Joule–Thomson and Joule–Thomson‐Like Effects of the Black Holes in a Cavity

2023

Fortschritte der Physik

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Entanglement entropy and complexity in the holographic model of superfluid

Lai

Pan

2023

Eur. Phys. J. C

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We numerically study the holographic entangle-ment entropy and complexity conjectured with the volume in the holographic superfluid with full backreaction which can realize first and second order phase transitions. Our results show that both the entanglement entropy and complexity exhibit the behaviors characterizing the type of the transition. For the first order phase transition, there is a fast drop of the entanglement entropy and a fast jump of the complexity at the critical temperature, while both of them are continuous but non-differentiable at the second order phase transition point. These suggest that both of holographic entanglement entropy and complexity may be used as a good probe to the type of superfluid phase transition. Moreover, at a fixed temperature in the superfluid phase, we observe that the increasing superfluid velocity increases the entanglement entropy but decreases the complexity. Interestingly, we find that, for the condensation operators $$\mathcal {O}_{+}$$ O + and $$\mathcal {O}_{-}$$ O - , the dependence of holographic entanglement entropy on the backreaction is inconsistent and so is the dependence of holographic complexity on the superfluid velocity in the normal phase, which indicates that the entanglement entropy and complexity may reflect deep physics about the difference between the two operators in the superfluid dual system.

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H − T phase diagrams of a holographic p-wave superfluid

Cited by 2 publications

References 42 publications

The Joule–Thomson and Joule–Thomson‐Like Effects of the Black Holes in a Cavity

The Joule–Thomson and Joule–Thomson‐Like Effects of the Black Holes in a Cavity

Entanglement entropy and complexity in the holographic model of superfluid

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