activity
20192026
most citedUnitarity From a Smooth Horizon?

84 citations · 361 across the 17 of their papers we have counts for

collaborators

17 papers

hep-th2026

What makes spacetime spin in string theory?

Matilda Delgado, Lorenz Eberhardt, Marija Tomašević

Type II string theory in the absence of orientifolds requires the target spacetime to admit a spin structure. We show that this familiar requirement arises directly from the co…

gr-qc2025★ 5 cited

Unveiling horizons in quantum critical collapse

Marija Tomašević, Chih-Hung Wu

Critical gravitational collapse offers a unique window into regimes of arbitrarily high curvature, culminating in a naked singularity arising from smooth initial data -- thus provi…

hep-th2024

Size and Shape of Rotating Strings and the Correspondence to Black Holes

Nejc Čeplak, Roberto Emparan, Andrea Puhm +1

In light of the correspondence between black holes and fundamental strings with non-zero spin, we compute the sizes of rotating strings for small, moderate, and large values of the…

hep-th2024★ 9 cited

String Theory in a Pinch: Resolving the Gregory-Laflamme Singularity

Roberto Emparan, Mikel Sanchez-Garitaonandia, Marija Tomašević

Thin enough black strings are unstable to growing ripples along their length, eventually pinching and forming a naked singularity on the horizon. We investigate how string theory c…

hep-th2023★ 1 cited

Singularities in 2D and 3D quantum black holes

Maciej Kolanowski, Marija Tomašević

We study black holes in two and three dimensions that have spacelike curvature singularities behind horizons. The 2D solutions are obtained by dimensionally reducing certain 3D bla…

hep-th2023★ 19 cited

The correspondence between rotating black holes and fundamental strings

Nejc Čeplak, Roberto Emparan, Andrea Puhm +1

The correspondence principle between strings and black holes is a general framework for matching black holes and massive states of fundamental strings at a point where their physic…

hep-th2023★ 24 cited

Holographic duals of evaporating black holes

Roberto Emparan, Raimon Luna, Ryotaku Suzuki +2

We describe the dynamical evaporation of a black hole as the classical evolution in time of a black hole in an Anti-de Sitter braneworld. A bulk black hole whose horizon intersects…

hep-th2022★ 57 cited

Black holes in dS

Roberto Emparan, Juan F. Pedraza, Andrew Svesko +2

In three-dimensional de Sitter space classical black holes do not exist, and the Schwarzschild-de Sitter solution instead describes a conical defect with a single cosmological hori…

hep-th2021★ 19 cited

Black Tsunamis and Naked Singularities in AdS

Roberto Emparan, David Licht, Ryotaku Suzuki +2

We study the evolution of the Gregory-Laflamme instability for black strings in global AdS spacetime, and investigate the CFT dual of the formation of a bulk naked singularity. Usi…

hep-th2021★ 40 cited

Holographic Complexity of Quantum Black Holes

Roberto Emparan, Antonia Micol Frassino, Martin Sasieta +1

We analyze different holographic complexity proposals for black holes that include corrections from bulk quantum fields. The specific setup is the quantum BTZ black hole, which enc…

hep-th2021★ 10 cited

Quantum Backreaction on Chronology Horizons

Roberto Emparan, Marija Tomašević

We extend in two directions our recent investigation of strongly interacting quantum fields in a class of spacetimes with chronology horizons (Misner spacetimes). First, we general…

hep-th2021★ 9 cited

Holography of time machines

Roberto Emparan, Marija Tomašević

We use holography to examine the response of interacting quantum fields to the appearance of closed timelike curves in a dynamically evolving background that initially does not con…

hep-th2020★ 18 cited

Multi-mouth Traversable Wormholes

Roberto Emparan, Brianna Grado-White, Donald Marolf +1

We describe the construction of traversable wormholes with multiple mouths in four spacetime dimensions and discuss associated quantum entanglement. Our wormholes may be traversed…

hep-th2020★ 33 cited

Strong cosmic censorship in the BTZ black hole

Roberto Emparan, Marija Tomašević

Recently it has been shown that quantum fields can be regular on the inner, Cauchy horizon of a rotating BTZ black hole, which appears to indicate a failure of strong cosmic censor…

hep-th2019★ 84 cited

Unitarity From a Smooth Horizon?

Raphael Bousso, Marija Tomasevic

Under semiclassical evolution, black holes retain a smooth horizon but fail to return information. Yet, the Ryu-Takayanagi prescription computes the boundary entropy expected from…

hep-th2019★ 16 cited

Quantum Information Bound on the Energy

Raphael Bousso, Arvin Shahbazi-Moghaddam, Marija Tomasevic

According to the classical Penrose inequality, the mass at spatial infinity is bounded from below by a function of the area of certain trapped surfaces. We exhibit quantum field th…

hep-th2019★ 17 cited

Quantum Penrose Inequality

Raphael Bousso, Arvin Shahbazi-Moghaddam, Marija Tomasevic

The classical Penrose inequality specifies a lower bound on the total mass in terms of the area of certain trapped surfaces. This fails at the semiclassical level. We conjecture a…