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A path integral on a link complement of a three-sphere fixes a vector (the "link state") in Chern-Simons theory. The link state can be written in a certain basis with the colored link invariants as its coefficients. We use symmetric webs to…

High Energy Physics - Theory · Physics 2017-07-13 Sungbong Chun , Ning Bao

We consider Chern-Simons theory for gauge group $G$ at level $k$ on 3-manifolds $M_n$ with boundary consisting of $n$ topologically linked tori. The Euclidean path integral on $M_n$ defines a quantum state on the boundary, in the $n$-fold…

High Energy Physics - Theory · Physics 2017-04-18 Vijay Balasubramanian , Jackson R. Fliss , Robert G. Leigh , Onkar Parrikar

Topological entanglement structure amongst disjoint torus boundaries of three manifolds have already been studied within the context of Chern-Simons theory. In this work, we study the topological entanglement due to interaction between the…

High Energy Physics - Theory · Physics 2019-08-08 Siddharth Dwivedi , Vivek Kumar Singh , P. Ramadevi , Yang Zhou , Saswati Dhara

We study the patterns of multipartite entanglement in Chern-Simons theory with compact simple gauge group $G$ and level $k$ for states defined by the path integral on ``link complements'', i.e., compact manifolds whose boundaries consist of…

High Energy Physics - Theory · Physics 2025-07-09 Vijay Balasubramanian , Charlie Cummings

The entanglement entropy of many quantum systems is difficult to compute in general. They are obtained as a limiting case of the R\'enyi entropy of index $m$, which captures the higher moments of the reduced density matrix. In this work, we…

High Energy Physics - Theory · Physics 2021-12-08 Aditya Dwivedi , Siddharth Dwivedi , Bhabani Prasad Mandal , Pichai Ramadevi , Vivek Kumar Singh

We study the multi-boundary entanglement structure of the state associated with the torus link complement $S^3 \backslash T_{p,q}$ in the set-up of three-dimensional SU(2)$_k$ Chern-Simons theory. The focal point of this work is the…

High Energy Physics - Theory · Physics 2020-12-24 Siddharth Dwivedi , Vivek Kumar Singh , Abhishek Roy

The way in which geometry encodes entanglement is a topic of much recent interest in quantum many-body physics and the AdS/CFT duality. This relation is particularly pronounced in the case of topological quantum field theories, where…

Quantum Physics · Physics 2017-06-07 Grant Salton , Brian Swingle , Michael Walter

We study the multi-boundary entanglement structure of the states prepared in (1+1) and (2+1) dimensional Chern-Simons theory with finite discrete gauge group $G$. The states in (1+1)-$d$ are associated with Riemann surfaces of genus $g$…

High Energy Physics - Theory · Physics 2020-04-24 Siddharth Dwivedi , Andrea Addazi , Yang Zhou , Puneet Sharma

We study the entanglement for a state on linked torus boundaries in $3d$ Chern-Simons theory with a generic gauge group and present the asymptotic bounds of R\'enyi entropy at two different limits: (i) large Chern-Simons coupling $k$, and…

High Energy Physics - Theory · Physics 2018-03-02 Siddharth Dwivedi , Vivek Kumar Singh , Saswati Dhara , P. Ramadevi , Yang Zhou , Lata Kh Joshi

We study the multipartite entanglement structure of quantum states prepared by the Euclidean path integral over three-manifolds with multiple torus boundaries (the so-called link states) in both Abelian and non-Abelian Chern-Simons…

High Energy Physics - Theory · Physics 2025-10-22 Ma-Ke Yuan , Mingyi Li , Yang Zhou

We investigate the topological entanglement entropy of quantum states arising in the context of three-dimensional Chern-Simons theory with compact gauge group $G$ and Chern-Simons level $k$. We focus on the quantum states associated with…

High Energy Physics - Theory · Physics 2026-01-05 Simran Sain , Siddharth Dwivedi

We explore a web of connections between quantum entanglement and knot theory by examining how topological entanglement entropy probes the braiding data of quasi-particles in Chern-Simons theory, mainly using $SU(2)$ gauge group as our…

High Energy Physics - Theory · Physics 2017-10-05 H. S. Tan

We compute various averages over bulk geometries of quantum states prepared by the Chern-Simons path integral, for any level $k$ and compact simple gauge group $G$. We do so by carefully summing over all topologically distinct bulk…

High Energy Physics - Theory · Physics 2025-07-24 Charlie Cummings

Pseudo-entropy and SVD entropy are generalizations of the entanglement entropy that involve post-selection. In this work we analyze their properties as measures on the spaces of quantum states and argue that their excess provides useful…

High Energy Physics - Theory · Physics 2025-02-25 Pawel Caputa , Souradeep Purkayastha , Abhigyan Saha , Piotr Sułkowski

We develop an approach based on edge theories to calculate the entanglement entropy and related quantities in (2+1)-dimensional topologically ordered phases. Our approach is complementary to, e.g., the existing methods using replica trick…

Mesoscale and Nanoscale Physics · Physics 2016-06-29 Xueda Wen , Shunji Matsuura , Shinsei Ryu

The notion of {\em entanglement entropy} in quantum mechanical systems is an important quantity, which measures how much a physical state is entangled in a composite system. Mathematically, it measures how much the state vector is not…

Number Theory · Mathematics 2023-12-29 Hee-Joong Chung , Dohyeong Kim , Minhyong Kim , Jeehoon Park , Hwajong Yoo

We study notions of complexity for link complement states in Chern Simons theory with compact gauge group $G$. Such states are obtained by the Euclidean path integral on the complement of $n$-component links inside a 3-manifold $M_3$. For…

High Energy Physics - Theory · Physics 2021-09-08 Robert G. Leigh , Pin-Chun Pai

A method to obtain explicit and complete topological solution of SU(2) Chern-Simons theory on $S^3$ is developed. To this effect the necessary aspects of the theory of coloured-oriented braids and duality properties of conformal blocks for…

High Energy Physics - Theory · Physics 2009-10-22 R. K. Kaul

We investigate how topological entanglement of Chern-Simons theory is captured in a string theoretic realization. Our explorations are motivated by a desire to understand how quantum entanglement of low energy open string degrees of freedom…

High Energy Physics - Theory · Physics 2020-01-08 Veronika E. Hubeny , Roji Pius , Mukund Rangamani

The standard, gapped entanglement boundary condition in Chern Simons theory breaks the topological invariance of the theory by introducing a complex structure on the entangling surface. This produces an infinite dimensional subregion…

High Energy Physics - Theory · Physics 2025-11-13 Gabriel Wong
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