activity
20202026
most citedPath-Integral Optimization from Hartle-Hawking Wave Function

37 citations · 118 across the 13 of their papers we have counts for

collaborators

14 papers

hep-th2026

Proving the OSV conjecture with the gravitational path integral

Nikolay Bobev, Jan Boruch, Luca V. Iliesiu +1

The OSV conjecture relates the helicity supertrace of black holes in supergravity obtained through a Calabi--Yau compactification of Type IIA string theory to…

hep-th2026

3D Gravity and Chaos in CFTs with Fermions

Jan Boruch, Elisa Tabor, Gustavo J. Turiaci

Pure 3d gravity in AdS is believed to admit a holographic description in terms of 2d CFT. We introduce a theory of fermionic 3d gravity where we sum over geometries equipped with s…

hep-th2025

Novel black saddles for 5d gravitational indices and the index enigma

Jan Boruch, Roberto Emparan, Luca V. Iliesiu +1

We construct a series of novel Euclidean multi-black-hole, black ring, black Saturn, and black lens solutions to supergravity that contribute as saddle-points to the grav…

hep-th2025

Multicentered black hole saddles for supersymmetric indices

Jan Boruch, Luca V. Iliesiu, Sameer Murthy +1

The supersymmetric index in string theory can sometimes have a discontinuous integer-valued jump at co-dimension one surfaces in moduli space called walls of marginal stability. Wh…

hep-th2025★ 5 cited

Modular-invariant random matrix theory and AdS wormholes

Jan Boruch, Gabriele Di Ubaldo, Felix M. Haehl +2

We develop a non-perturbative definition of RMT: a generalization of random matrix theory that is compatible with the symmetries of two-dimensional conformal field theory. Gi…

hep-th2025★ 8 cited

The gravitational index of 5d black holes and black strings

Jan Boruch, Roberto Emparan, Luca V. Iliesiu +1

The supersymmetric index of 5d black strings and spinning black holes in M-theory is related to that of 4d black holes in type IIA supergravity when both theories are compactified…

hep-th2024

How the Hilbert space of two-sided black holes factorises

Jan Boruch, Luca V. Iliesiu, Guanda Lin +1

In AdS/CFT, two-sided black holes are described by states in the tensor product of two Hilbert spaces associated with the two asymptotic boundaries of the spacetime. Understanding…

hep-th2023★ 3 cited

New forms of attraction: Attractor saddles for the black hole index

Jan Boruch, Luca V. Iliesiu, Sameer Murthy +1

The count of microstates for supersymmetric black holes is typically obtained from a supersymmetric index in weakly-coupled string theory. We find the saddles in the gravitational…

hep-th2023

Exploring supersymmetric wormholes in SYK with chords

Jan Boruch, Henry W. Lin, Cynthia Yan

A feature the supersymmetric Sachdev-Ye-Kitaev (SYK) model shares with extremal black holes is an exponentially large number of ground states that preserve supersym…

hep-th2023★ 2 cited

Constructing all BPS black hole microstates from the gravitational path integral

Jan Boruch, Luca V. Iliesiu, Cynthia Yan

Understanding how to prepare and count black hole micro-states by using the gravitational path integral is one of the most important problems in quantum gravity. Nevertheless, a st…

hep-th2022★ 18 cited

BPS and near-BPS black holes in and their spectrum in SYM

Jan Boruch, Matthew T. Heydeman, Luca V. Iliesiu +1

We study quantum corrections in the gravitational path integral around nearly -BPS black holes in asymptotically space, dual to heavy states in 4D $\mathca…

hep-th2021★ 31 cited

Holographic Path-Integral Optimization

Jan Boruch, Pawel Caputa, Dongsheng Ge +1

In this work we elaborate on holographic description of the path-integral optimization in conformal field theories (CFT) using Hartle-Hawking wave functions in Anti-de Sitter space…

hep-th2020★ 37 cited

Path-Integral Optimization from Hartle-Hawking Wave Function

Jan Boruch, Pawel Caputa, Tadashi Takayanagi

We propose a gravity dual description of the path-integral optimization in conformal field theories arXiv:1703.00456, using Hartle-Hawking wave functions in anti-de Sitter spacetim…

hep-th2020★ 14 cited

Entanglement wedge cross-section in shock wave geometries

Jan Boruch

We consider reflected entropy in a thermofield double state perturbed by a heavy operator insertion. For sufficiently early operator insertions the dual geometry can be described b…