91 citations · 642 across the 20 of their papers we have counts for
20 papers
Quantizing Bosonized Fermi Surfaces
Sihan Chen, Luca V. Delacretaz
Bosonization describes Fermi surface dynamics in terms of a collective field that lives on a part of phase space. While sensible semiclassically, the challenge of treating such a f…
Universal thermalization dynamics in (1+1)d QFTs
Richard A. Davison, Luca V. Delacretaz
We identify the universal mechanism behind the thermalization of (1+1)d QFTs at high and low temperatures. Viewing these theories as CFTs perturbed by relevant or irrelevant deform…
A Bound on Thermalization from Diffusive Fluctuations
Luca V. Delacretaz
The local equilibration time of quantum many-body systems has been conjectured to satisfy a `Planckian bound', . We provide a sharp and universal…
Nonlinear Response in Diffusive Systems
Luca V. Delacretaz, Ruchira Mishra
Nonintegrable systems thermalize, leading to the emergence of fluctuating hydrodynamics. Typically, this hydrodynamics is diffusive. We use the effective field theory (EFT) of diff…
Thermalization and chaos in a 1+1d QFT
Luca V. Delacretaz, A. Liam Fitzpatrick, Emanuel Katz +1
We study aspects of chaos and thermodynamics at strong coupling in a scalar model using LCT numerical methods. We find that our eigenstate spectrum satisfies Wigner-Dyson statistic…
Nonlinear Bosonization of Fermi Surfaces: The Method of Coadjoint Orbits
Luca V. Delacretaz, Yi-Hsien Du, Umang Mehta +1
We develop a new method for bosonizing the Fermi surface based on the formalism of the coadjoint orbits. This allows one to parametrize the Fermi surface by a bosonic field that de…
Thermalization and Hydrodynamics of Two-Dimensional Quantum Field Theories
Luca V. Delacretaz, A. Liam Fitzpatrick, Emanuel Katz +1
We consider 2d QFTs as relevant deformations of CFTs in the thermodynamic limit. Using causality and KPZ universality, we place a lower bound on the timescale characterizing the on…
Large Charge Sector of 3d Parity-Violating CFTs
Gabriel Cuomo, Luca V. Delacretaz, Umang Mehta
Certain CFTs with a global symmetry become superfluids when coupled to a chemical potential. When this happens, a Goldstone effective field theory controls the spectrum and…
The Future of the Correlated Electron Problem
A. Alexandradinata, N. P. Armitage, Andrey Baydin +44
A central problem in modern condensed matter physics is the understanding of materials with strong electron correlations. Despite extensive work, the essential physics of many of t…
Heavy Operators and Hydrodynamic Tails
Luca V. Delacretaz
The late time physics of interacting QFTs at finite temperature is controlled by hydrodynamics. For CFTs this implies that heavy operators -- which are generically expected to crea…
Breakdown of Diffusion on the Edge
Luca V. Delacretaz, Paolo Glorioso
We show that dirty Quantum Hall systems exhibit large hydrodynamic fluctuations at their edge that lead to anomalously damped charge excitations in the Kardar-Parisi-Zhang universa…
Conformal Truncation of Chern-Simons Theory at Large
Luca V. Delacrétaz, A. Liam Fitzpatrick, Emanuel Katz +1
We set up and analyze the lightcone Hamiltonian for an abelian Chern-Simons field coupled to fermions in the limit of large using conformal truncation, i.e. with a trun…
Theory of diffusive fluctuations
Xinyi Chen-Lin, Luca V. Delacrétaz, Sean A. Hartnoll
The recently developed effective field theory of fluctuations around thermal equilibrium is used to compute late-time correlation functions of conserved densities. Specializing to…
Ultrafast time-resolved x-ray scattering reveals diffusive charge order dynamics in LaBaCuO
Matteo Mitrano, Sangjun Lee, Ali A. Husain +15
Charge order is universal among high-T cuprates but its relevance to superconductivity is not established. It is widely believed that, while static order competes with supercon…
Thermalization, Viscosity and the Averaged Null Energy Condition
Luca V. Delacrétaz, Thomas Hartman, Sean A. Hartnoll +1
We explore the implications of the averaged null energy condition for thermal states of relativistic quantum field theories. A key property of such thermal states is the thermaliza…
Transport signatures of Hall viscosity
Luca V. Delacretaz, Andrey Gromov
Hall viscosity is a non-dissipative response function describing momentum transport in two-dimensional systems with broken parity. It is quantized in the quantum Hall regime, and c…
The Supersymmetric Effective Field Theory of Inflation
Luca V. Delacretaz, Victor Gorbenko, Leonardo Senatore
We construct the Supersymmetric Effective Field Theory of Inflation, that is the most general theory of inflationary fluctuations when time-translations and supersymmetry are spont…
Boost Breaking in the EFT of Inflation
Luca V. Delacretaz, Toshifumi Noumi, Leonardo Senatore
If time-translations are spontaneously broken, so are boosts. This symmetry breaking pattern can be non-linearly realized by either just the Goldstone boson of time translations, o…
(Re-)Inventing the Relativistic Wheel: Gravity, Cosets, and Spinning Objects
Luca V. Delacretaz, Solomon Endlich, Alexander Monin +2
Space-time symmetries are a crucial ingredient of any theoretical model in physics. Unlike internal symmetries, which may or may not be gauged and/or spontaneously broken, space-ti…
Wess-Zumino Terms for Relativistic Fluids, Superfluids, Solids, and Supersolids
Luca V. Delacrétaz, Alberto Nicolis, Riccardo Penco +1
We use the coset construction of low-energy effective actions to systematically derive Wess-Zumino (WZ) terms for fluid and isotropic solid systems in two, three and four spacetime…