Simple holographic duals to boundary CFTs

Chiodaroli, Marco; D’Hoker, Eric; Gutperle, Michael

doi:10.1007/jhep02(2012)005

Cited by 39 publications

(51 citation statements)

References 45 publications

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“…One approach to construct exact solutions, which has been very fruitful in the past, is to solve BPS conditions for the existence of backgrounds which preserve a subset of super symmetries of the AdS vacuum. This approach has been very successful in constructing half BPS Janus solutions in type IIB [10,11], M-theory [12,47] and six dimensional supergravity [15,16,31,32]. It would be very interesting to explore these methods to construct BPS solutions for the the relevant deformations related to the ones in the present paper.…”

Section: Discussionmentioning

confidence: 94%

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Holographic renormalization group flows and boundary conformal field theories

Gutperle

Samani

2012

Phys. Rev. D

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Solutions of (d + 1)-dimensional gravity coupled to a scalar field are obtained, which holographically realize interface and boundary CFTs. The solution utilizes a Janus-like AdS d slicing ansatz and corresponds to a deformation of the CFT by a spatially-dependent coupling of a relevant operator. The BCFT solutions are singular in the bulk, but physical quantities such as the holographic entanglement entropy can be calculated.

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Section: Discussionmentioning

confidence: 94%

“…These solutions were constructed for four dimensional BCFTs [28,29,30] and for two dimensional BCFTs [31]. Note that these solutions are necessarily singular.…”

Section: Introductionmentioning

confidence: 99%

Holographic renormalization group flows and boundary conformal field theories

Gutperle

Samani

2012

Phys. Rev. D

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“…It may also be possible to perform direct calculations in holographic CFTs by assuming something about the structure of holographic BCFT correlators, similar to the calculations in [83,84]. Another possibility we are pursuing is to develop a general calculational tools based on a randomness assumption, similar to the eigenstate thermalization already been understood: see [78,79,80]. 21 We thank Volker Schomerus for this suggestion.…”

Section: Discussionmentioning

confidence: 99%

Black hole microstate cosmology

Cooper

Rozali

Swingle

et al. 2019

J. High Energ. Phys.

135

245

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In this note, we explore the possibility that certain high-energy holographic CFT states correspond to black hole microstates with a geometrical behind-the-horizon region, modelled by a portion of a second asymptotic region terminating at an end-of-theworld (ETW) brane. We study the time-dependent physics of this behind-the-horizon region, whose ETW boundary geometry takes the form of a closed FRW spacetime. We show that in many cases, this behind-the-horizon physics can be probed directly by looking at the time dependence of entanglement entropy for sufficiently large spatial CFT subsystems. We study in particular states defined via Euclidean evolution from conformal boundary states and give specific predictions for the behavior of the entanglement entropy in this case. We perform analogous calculations for the SYK model and find qualitative agreement with our expectations.A fascinating possibility is that for certain states, we might have gravity localized to the ETW brane as in the Randall-Sundrum II scenario for cosmology. In this case, the effective description of physics beyond the horizon could be a big bang/big crunch cosmology of the same dimensionality as the CFT. In this case, the d-dimensional CFT describing the black hole microstate would give a precise, microscopic description of the d-dimensional cosmological physics. seancooper@phas.ubc.ca, rozali@phas.ubc.ca, bswingle@umd.edu, mav@phas.ubc.ca, cwaddell@phas.ubc.ca, daw@phas.ubc.ca 2 Some authors have argued that quantum effects should modify these expectations: the "fuzzball" proposal [1,2,3,4] suggests that microstate geometries are actually horizonless, while proponents of the "firewall" scenario [5,6] argued that consistency with unitarity and the equivalence principle imply that the geometry must end in some type of singularity at or just beyond the horizon. But many authors have given counter-arguments suggesting a more conventional picture.

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“…These examples include the d = 4 BCFT arising from D3-branes ending on D5-branes [31], the d = 3 BCFT arising from M2-branes ending on M5-branes [32], and the d = 2 BCFTs of refs. [33,34]. Figure 1.…”

Section: Jhep05(2014)084mentioning

confidence: 99%

On holographic defect entropy

Estes

Jensen

O’Bannon

et al. 2014

J. High Energ. Phys.

121

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Abstract:We study a number of (3+1)-and (2+1)-dimensional defect and boundary conformal field theories holographically dual to supergravity theories. In all cases the defects or boundaries are planar, and the defects are codimension-one. Using holography, we compute the entanglement entropy of a (hemi-)spherical region centered on the defect (boundary). We define defect and boundary entropies from the entanglement entropy by an appropriate background subtraction. For some (3 + 1)-dimensional theories we find evidence that the defect/boundary entropy changes monotonically under certain renormalization group flows triggered by operators localized at the defect or boundary. This provides evidence that the g-theorem of (1 + 1)-dimensional field theories generalizes to higher dimensions.

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Simple holographic duals to boundary CFTs

Cited by 39 publications

References 45 publications

Holographic renormalization group flows and boundary conformal field theories

Holographic renormalization group flows and boundary conformal field theories

Black hole microstate cosmology

On holographic defect entropy

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