63 citations · 384 across the 25 of their papers we have counts for
28 papers
Resurgence of the Thermal Transition between Bounce and Sphaleron
Shaun D. Hampton, Kyungsun Lee, Sungjay Lee
We study the thermal transition between the bounce and the sphaleron in quantum mechanics with a metastable vacuum from the viewpoint of Borel resurgence. For two models representi…
Four-twist effects on excitations in symmetric orbifold CFTs
Bin Guo, Shaun D. Hampton
Symmetric orbifold CFTs contain twist operators that can join and split copies of the CFT. In this paper, we study the effects of four twist-2 operators on two copies of a single f…
Four-twist effects and monodromy in symmetric orbifold CFTs
Bin Guo, Shaun D. Hampton
Symmetric orbifold CFTs contain twist operators that can join and split copies of the CFT, leading to the creation of pairs from the vacuum. In this paper, we study the pair creati…
Inscribing geodesic circles on the face of the superstratum
Bin Guo, Shaun D. Hampton, Nicholas P. Warner
We use families of circular null geodesics as probes of a family of microstate geometries, known as superstrata. These geometries carry a left-moving momentum wave and th…
Bootstrapping multi-wound twist effects in symmetric orbifold CFTs
Bin Guo, Shaun D. Hampton
We investigate the effects of the twist-2 operator in 2D symmetric orbifold CFTs. The twist operator can join together a twist- state and a twist- state, creating a twist-$(M…
A 4d non-BPS NS-NS microstate
Soumangsu Chakraborty, Shaun D. Hampton
We construct a two-parameter four-dimensional non-BPS NS-NS smooth microstate solution that asymptotes to flat spacetime with a linear dilaton in type II superstring theory. From t…
Themelia: the irreducible microstructure of black holes
Iosif Bena, Nejc Čeplak, Shaun D. Hampton +3
We argue that the fundamental "atomic objects" in string theory are themelia: extended objects that have 16 supersymmetries locally. We show that all existing smooth horizonless mi…
The (amazing) Super-Maze
Iosif Bena, Shaun D. Hampton, Anthony Houppe +2
The entropy of the three-charge NS5-F1-P black hole in Type IIA string theory comes from the breaking of F1 strings into little strings, which become independent mo…
Bootstrapping the effect of the twist operator in the D1D5 CFT
Bin Guo, Shaun Hampton
In the D1D5 CFT the twist operator of order 2 can twist together two copies in the untwisted sector into a single joined copy in the twisted sector. Traditionally, this effect is c…
Bootstrapping the effect of the twist operator in symmetric orbifold CFTs
Bin Guo, Shaun D. Hampton
We study the 2D symmetric orbifold CFT of two copies of free bosons. The twist operator can join the two separated copies in the untwisted sector into a joined copy in the twisted…
Linearizing the BPS Equations with Vector and Tensor Multiplets
Nejc Čeplak, Shaun Hampton, Nicholas P. Warner
We analyse the BPS equations of supergravity theory in six dimensions coupled to a vector and tensor multiplet. We show how these BPS equations can be reduced…
Entanglement Entropy and Phase Space Density: Lowest Landau Levels and 1/2 BPS states
Sumit R. Das, Shaun Hampton, Sinong Liu
We consider the entanglement entropy of an arbitrary subregion in a system of non-relativistic fermions in dimensions in Lowest Landau Level (LLL) states. Using the conne…
Resolving Black-Hole Microstructure with New Momentum Carriers
Iosif Bena, Nejc Ceplak, Shaun Hampton +3
All known horizonless black-hole microstate geometries correspond to brane sources that acquire a finite size, and hence break the spherical symmetry of the black hole. We construc…
Partial Spectral Flow in the D1D5 CFT
Bin Guo, Shaun Hampton
The two-dimensional superconformal algebra has a free field realization with four bosons and four fermions. There is an automorphism of the algebra called spectral…
The Dual of a Tidal Force in the D1D5 CFT
Bin Guo, Shaun Hampton
It was demonstrated that a string probe falling radially within a superstratum geometry would experience tidal forces. These tidal forces were shown to excite the string by convert…
A freely falling graviton in the D1D5 CFT
Bin Guo, Shaun Hampton
We study a freely falling graviton propagating in AdS in the context of the D1D5 CFT, where we introduce an interaction by turning on a deformation operator. We start with one left…
Toroidal Tidal Effects in Microstate Geometries
Nejc Ceplak, Shaun Hampton, Yixuan Li
Tidal effects in capped geometries computed in previous literature display no dynamics along internal (toroidal) directions. However, the dual CFT picture suggests otherwise. To re…
Thermalization in the D1D5 CFT
Shaun Hampton, Samir D. Mathur
It is generally agreed that black hole formation in gravity corresponds to thermalization in the dual CFT. It is sometimes argued that if the CFT evolution shows evidence of large…
Quantum Quench in Matrix Model and Emergent Space-times
Sumit R. Das, Shaun Hampton, Sinong Liu
We consider quantum quench in large-N singlet sector quantum mechanics of a single hermitian matrix in the double scaling limit. The time dependent parameter is the self-coupling o…
Understanding Black Hole Formation in String Theory
Shaun Hampton
The strongly coupled dynamics of black hole formation in bulk AdS is conjectured to be dual to the thermalization of a weakly interacting CFT on the boundary for low which, for…
Quantum Quench in Non-relativistic Fermionic Field Theory: Harmonic traps and 2d String Theory
Sumit R. Das, Shaun Hampton, Sinong Liu
We investigate a class of exactly solvable quantum quench protocols with a finite quench rate in systems of one dimensional non-relativistic fermions in external harmonic oscillato…
Lifting of D1-D5-P states
Shaun Hampton, Samir D. Mathur, Ida G. Zadeh
We consider states of the D1-D5 CFT where only the left-moving sector is excited. As we deform away from the orbifold point, some of these states will remain BPS while others can `…
Can we observe fuzzballs or firewalls?
Bin Guo, Shaun Hampton, Samir D. Mathur
In the fuzzball paradigm the information paradox is resolved because the black hole is replaced by an object with no horizon. One may therefore ask if observations can distinguish…
Full action of two deformation operators in the D1D5 CFT
Zaq Carson, Shaun Hampton, Samir D. Mathur
We are interested in thermalization in the D1D5 CFT, since this process is expected to be dual to black hole formation. We expect that the lowest order process where thermalization…