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Integrable defects in two-dimensional integrable models are purely transmitting thus topological. By fusing them to integrable boundaries new integrable boundary conditions can be generated, and, from the comparison of the two solved…

High Energy Physics - Theory · Physics 2008-11-26 Z. Bajnok , Zs. Simon

We investigate the reflected entropy for various mixed state configurations in the two dimensional holographic conformal field theories sharing a common interface (ICFTs). In the AdS$_3$/ICFT$_2$ framework, we compute the holographic…

High Energy Physics - Theory · Physics 2024-10-10 Jaydeep Kumar Basak , Debarshi Basu , Vinay Malvimat , Himanshu Parihar , Gautam Sengupta

{In 1+1 dimensional conformal field theory with a boundary the boundary contribution to the entanglement entropy is determined by a single number $g$ effectively counting the boundary degrees of freedom. In contrast, in 1+1 dimensional…

High Energy Physics - Theory · Physics 2025-04-02 Evangelos Afxonidis , Andreas Karch , Chitraang Murdia

We study a class of interface conformal field theories obtained by taking a large $N$ CFT and turning on a relevant double-trace deformation over half space. At low energies, this leads to a conformal interface separating two CFTs which are…

High Energy Physics - Theory · Physics 2025-02-11 Simone Giombi , Elizabeth Helfenberger , Himanshu Khanchandani

Holographic duals for CFTs compactified on a Riemann surface $\Sigma$ with a twist are cast in the language of wedge holography. $\Sigma$ starts as part of the field theory geometry in the UV and becomes part of the internal space in the…

High Energy Physics - Theory · Physics 2022-01-27 Christoph F. Uhlemann

We discuss the properties of codimension-two branes and compare them to codimension-one branes. In particular, we show that for deficit angle branes the brane energy momentum tensor is uniquely related to integration constants in the bulk…

High Energy Physics - Theory · Physics 2010-01-27 Jan-Markus Schwindt , Christof Wetterich

We extend the holographic duality between 3d pure gravity and the 2d Ising CFT proposed in [Phys. Rev. D 85 (2012) 024032] to CFTs with boundaries. Besides the usual asymptotic boundary, the dual bulk spacetime now has a real cutoff, on…

High Energy Physics - Theory · Physics 2021-06-08 Andreas Karch , Zhu-Xi Luo , Hao-Yu Sun

In this paper, we study a holographic description of weak measurements in conformal field theories (CFTs). Weak measurements can be viewed as a soft projection that interpolates between an identity operator and a projection operator, and…

High Energy Physics - Theory · Physics 2023-12-29 Xinyu Sun , Shao-Kai Jian

Electroencephalography (EEG) decoding requires models that can effectively extract and integrate complex temporal, spectral, and spatial features from multichannel signals. To address this challenge, we propose a lightweight and…

Human-Computer Interaction · Computer Science 2026-01-21 Haodong Zhang , Jiapeng Zhu , Yitong Chen , Hongqi Li

We investigate a family of models described by two holographic CFT$_2$s coupled along a shared interface. The bulk dual geometry consists of two AdS$_3$ spacetimes truncated by a shared Karch-Randall end-of-the-world (EOW) brane. A lower…

High Energy Physics - Theory · Physics 2024-05-10 Mir Afrasiar , Debarshi Basu , Ashish Chandra , Vinayak Raj , Gautam Sengupta

We propose a holographic duality for the boundary Lifshitz field theory (BLFT). Similar to holographic BCFT, holographic BLFT can be consistently defined by imposing either a Neumann boundary condition (NBC) or a conformal boundary…

High Energy Physics - Theory · Physics 2024-12-02 Chong-Sun Chu , Ignacio Garrido Gonzalez , Himanshu Parihar

We propose a new class of holographic dualities between certain, generically non supersymmetric, defect conformal field theories (dCFTs) and their gravity duals. Our construction interpolates between the 1/2-BPS D3-D3 system and its field…

High Energy Physics - Theory · Physics 2026-04-27 George Georgiou , Dimitrios Zoakos

Heterogeneous interfaces are central to many energy-related applications in the nanoscale. From the first-principles electronic structure perspective, one of the outstanding problems is accurately and efficiently calculating how the…

Materials Science · Physics 2023-08-29 Zhen-Fei Liu

In the framework of double holography, we investigate the entanglement behavior of a brane subregion in AdS spacetime coupled to a bath on its boundary and also extract the contribution from the quantum matter within this subregion. From…

High Energy Physics - Theory · Physics 2023-12-14 Yuxuan Liu , Qian Chen , Yi Ling , Cheng Peng , Yu Tian , Zhuo-Yu Xian

We study holographic defect conformal field theories which are dual to probe branes with bottom-up methods. First we determine the embedding of codimension-1 interface branes in AdS space. Then we compute defect one and two-point functions…

High Energy Physics - Theory · Physics 2026-04-09 Georgios Linardopoulos , Chanyong Park

Large black holes in anti-de Sitter space have positive specific heat and do not evaporate. In order to mimic the behavior of evaporating black holes, one may couple the system to an external bath. In this paper we explore a rich family of…

High Energy Physics - Theory · Physics 2022-10-05 Tarek Anous , Marco Meineri , Pietro Pelliconi , Julian Sonner

We employ double holography to examine a system of two entangled gravitating universes that live on two codimension-one branes in an asymptotically AdS$_3$ spacetime with two disjoint conformal boundaries. There are distinct brane…

High Energy Physics - Theory · Physics 2024-03-27 Robert C. Myers , Shan-Ming Ruan , Tomonori Ugajin

We propose a new holographic dual of conformal field theory defined on a manifold with boundaries, i.e. BCFT. Our proposal can apply to general boundaries and agrees with arXiv:1105.5165 for the special case of a disk and half plane. Using…

High Energy Physics - Theory · Physics 2017-08-16 Rong-Xin Miao , Chong-Sun Chu , Wu-Zhong Guo

We provide a comprehensive overview of the current status of higher-codimension defect systems. We review the holographic description and field theoretic properties of codimension-2 defects within the framework of defect Conformal Field…

High Energy Physics - Theory · Physics 2026-05-15 George Georgiou , Dimitrios Zoakos

Defect conformal field theories (dCFTs) have been attracting increased attention recently, mainly because they enable us to bridge the gap between idealistic, highly symmetric models of our world (such as the particle/string duality) and…

High Energy Physics - Theory · Physics 2020-08-20 Georgios Linardopoulos