6 citations · 14 across the 9 of their papers we have counts for
10 papers
All-temperature superfluidity in two dimensions
Bilal Hawashin, Soumyadeep Chaudhuri, Igor F. Herbut +1
In local theories with short-range interactions, continuous symmetries cannot be spontaneously broken in two spatial dimensions at nonzero temperature. -symmetric mo…
Exploring thermal order in conformal theories with multiple scalars coupled to an vector field
Soumyadeep Chaudhuri, Bilal Hawashin, Eliezer Rabinovici +1
We study thermal order in conformal field theories (CFTs) in and dimensions where several scalars are coupled to an vector field. In dimensions, we con…
Quantum critical fan and emergent relativistic symmetry of two-dimensional Dirac semimetals
Friederike Ihssen, Bilal Hawashin, Mireia Tolosa-Simeón +1
Two-dimensional Dirac semimetals near a quantum critical point can be described by Gross--Neveu--Yukawa models. In view of recent experimental advances exhibiting a transition from…
Spontaneous symmetry breaking of in Gross--Neveu theory from expansion
Bilal Hawashin, Max Uetrecht
It was recently established that the paradigmatic Gross--Neveu model with copies of two-dimensional Dirac fermions features an symmetry if certain interaction…
Relativistic Mott transition and high-order van Hove singularity in twisted double bilayer WSe: mean-field and functional renormalization group study
Bilal Hawashin, Julian Kleeschulte, David Kurz +2
Experiments on twisted double bilayer tungsten diselenide have demonstrated that moir'e semiconductors can realize a relativistic Mott transition, i.e., a quantum phase transition…
Spontaneous Space-Time Parity Breaking Without Thermal Restoration
Bilal Hawashin, Michael M. Scherer, Michael Smolkin +1
We construct an ultraviolet-complete, local, and unitary quantum field theory in 2+1 dimensions that exhibits spontaneous breaking of space-time parity, persisting to arbitrarily h…
Gross-Neveu-XY quantum criticality in moiré Dirac materials
Bilal Hawashin, Michael M. Scherer, Lukas Janssen
Two-dimensional van-der-Waals materials offer a highly tunable platform for engineering electronic band structures and interactions. By employing techniques such as twisting, gatin…
UV complete local field theory of persistent symmetry breaking in 2+1 dimensions
Bilal Hawashin, Junchen Rong, Michael M. Scherer
Spontaneous symmetry breaking can persist at all temperatures in certain biconical vector models when the underlying field theories are ultraviol…
The Nordic-walking mechanism and its explanation of deconfined pseudocriticality from Wess-Zumino-Witten theory
Bilal Hawashin, Astrid Eichhorn, Lukas Janssen +2
The understanding of phenomena falling outside the Ginzburg-Landau paradigm of phase transitions represents a key challenge in condensed matter physics. A famous class of examples…
Topological Properties of Single-Particle States Decaying into a Continuum due to Interaction
B. Hawashin, J. Sirker, G. S. Uhrig
We investigate how topological Chern numbers can be defined when single-particle states hybridize with continua. We do so exemplarily in a bosonic Haldane model at zero temperature…