100 citations · 404 across the 12 of their papers we have counts for
12 papers
Chaos and pole skipping in CFT
David M. Ramirez
Recent work has suggested an intriguing relation between quantum chaos and energy density correlations, known as pole skipping. We investigate this relationship in two dimensional…
BMS Symmetry via AdS/CFT
David A. Lowe, David M. Ramirez
With a view to understanding extended-BMS symmetries in the framework of the correspondence, asymptotically AdS geometries are constructed with null impulsive shockwa…
Spinning constraints on chaotic large CFTs
Chi-Ming Chang, David M. Ramirez, Mukund Rangamani
We study out-of-time ordered four-point functions in two dimensional conformal field theories by suitably analytically continuing the Euclidean correlator. For large central charge…
Schwinger-Keldysh superspace in quantum mechanics
Michael Geracie, Felix M. Haehl, R. Loganayagam +3
We examine, in a quantum mechanical setting, the Hilbert space representation of the BRST symmetry associated with Schwinger-Keldysh path integrals. This structure had been postula…
Shear hydrodynamics, momentum relaxation, and the KSS bound
Tudor Ciobanu, David M. Ramirez
In this paper we investigate the behavior of the shear hydrodynamic response functions in a simple holographic model exhibiting momentum relaxation. We compute several stress tenso…
Closure of the Operator Product Expansion in the Non-Unitary Bootstrap
Ilya Esterlis, A. Liam Fitzpatrick, David Ramirez
We use the numerical conformal bootstrap in two dimensions to search for finite, closed sub-algebras of the operator product expansion (OPE), without assuming unitarity. We find th…
Entropy production, viscosity bounds and bumpy black holes
Sean A. Hartnoll, David M. Ramirez, Jorge E. Santos
The ratio of shear viscosity to entropy density, , is computed in various holographic geometries that break translation invariance (but are isotropic). The shear viscosity doe…
Thermal conductivity at a disordered quantum critical point
Sean A. Hartnoll, David M. Ramirez, Jorge E. Santos
Strongly disordered and strongly interacting quantum critical points are difficult to access with conventional field theoretic methods. They are, however, both experimentally impor…
Emergent scale invariance of disordered horizons
Sean A. Hartnoll, David M. Ramirez, Jorge E. Santos
We construct planar black hole solutions in AdS_3 and AdS_4 in which the boundary CFT is perturbed by marginally relevant quenched disorder. We show that the entropy density of the…
Clumping and quantum order: Quantum gravitational dynamics of NUT charge
Sean A. Hartnoll, David M. Ramirez
Gravitational instantons with NUT charge are magnetic monopoles upon dimensional reduction. We determine whether NUT charge can proliferate via the Polyakov mechanism and partially…
Quantum critical metals in
R. Mahajan, D. M. Ramirez, S. Kachru +1
We study the problem of disorder-free metals near a continuous Ising nematic quantum critical point in dimensions. We begin with perturbation theory in the `Yukawa' couplin…
The Pauli exclusion principle at strong coupling: Holographic matter and momentum space
Richard J. Anantua, Sean A. Hartnoll, Victoria L. Martin +1
For free fermions at finite density, the Pauli exclusion principle is responsible for the existence of a Fermi surface and the consequent presence of low energy spectral weight ove…