329 citations · 3.5k across the 125 of their papers we have counts for
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Continuum limit of a qubit-regularized SU(3) lattice gauge theory on a plaquette chain
Rui Xian Siew, Shailesh Chandrasekharan, Tanmoy Bhattacharya
We show that a simple qubit-regularized lattice gauge theory on a plaquette chain admits a continuum limit with massive gauge-invariant excitations, providing a mi…
Symmetric Mass Generation via Multicriticality in a 3D Lattice Gross-Neveu Model
Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan +1
We investigate a three-dimensional lattice model of two flavors of massless staggered fermions coupled through two independent four-fermion interactions, and . Using lar…
Confined and Deconfined Phases of Qubit Regularized Lattice Gauge Theories
Shailesh Chandrasekharan
We construct simple qubit-regularized Hamiltonian lattice gauge theories formulated in the monomer--dimer--tensor-network (MDTN) basis that are free of sign problems in the pure ga…
Phase diagram of a lattice fermion model with symmetric mass generation
Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan +1
We study the phase structure of a model containing two flavors of massless staggered fermions interacting through two independent four-fermion couplings, UI and UB, formulated on a…
Asymptotic-freedom and massive glueballs in a qubit-regularized SU(2) gauge theory
Rui Xian Siew, Shailesh Chandrasekharan, Tanmoy Bhattacharya
We argue that a simple qubit-regularized lattice gauge theory (LGT) on a plaquette chain serves as a pseudo-one-dimensional toy model for Yang-Mills (YM) theory in…
Symmetric Mass Generation as a Multicritical Point with Enhanced Symmetry
Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan +1
We explore the phase diagram of a lattice fermion model that exhibits three distinct phases: a massless fermion phase, a massive fermion phase with spontaneous symmetry breaking in…
Qubit Regularization of Quantum Field Theories
Shailesh Chandrasekharan
To study quantum field theories on a quantum computer, we must begin with Hamiltonians defined on a finite-dimensional Hilbert space and then take appropriate limits. This approach…
Monomer-dimer tensor-network basis for qubit-regularized lattice gauge theories
Shailesh Chandrasekharan, Rui Xian Siew, Tanmoy Bhattacharya
Traditional lattice gauge theories (LGTs) can be formulated using an orthonormal basis constructed from the irreducible representations (irreps) of the $\mat…
A qubit regularization of asymptotic freedom without fine-tuning
Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan +1
Other than the commonly used Wilson's regularization of quantum field theories (QFTs), there is a growing interest in regularizations that explore lattice models with a strictly fi…
Phases of 2d massless QCD with qubit regularization
Hanqing Liu, Tanmoy Bhattacharya, Shailesh Chandrasekharan +1
We investigate the possibility of reproducing the continuum physics of 2d SU(N) gauge theory coupled to a single flavor of massless Dirac fermions using qubit regularization. The c…
Topological terms with qubit regularization and relativistic quantum circuits
Tanmoy Bhattacharya, Shailesh Chandrasekharan, Rajan Gupta +2
Qubit regularization provides a rich framework to explore quantum field theories. The freedom to choose how the important symmetries of the theory are embedded in the qubit regular…
Asymptotic Freedom at the Berezinskii-Kosterlitz-Thouless Transition without Fine-Tuning Using a Qubit Regularization
Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan +1
We propose a two-dimensional hard-core loop-gas model as a way to regularize the asymptotically free massive continuum quantum field theory that emerges at the Berezinskii-Kosterli…
Vacuum Entanglement Harvesting in the Ising Model
Hersh Singh, Tanmoy Bhattacharya, Shailesh Chandrasekharan +1
The low-energy states of quantum many body systems, such as spin chains, are entangled. Using tensor network computations, we demonstrate a protocol that distills Bell pairs out of…
Lattice QCD and Particle Physics
Andreas S. Kronfeld, Tanmoy Bhattacharya, Thomas Blum +79
Contribution from the USQCD Collaboration to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021).
Qubit Regularization and Qubit Embedding Algebras
Hanqing Liu, Shailesh Chandrasekharan
Qubit regularization is a procedure to regularize the infinite dimensional local Hilbert space of bosonic fields to a finite dimensional one, which is a crucial step when trying to…
Three-dimensional Gross-Neveu model with two flavors of staggered fermions
Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan +1
We introduce a strongly interacting lattice field theory model containing two flavors of massless staggered fermions with two kinds of interactions: (1) a lattice current-current i…
Space-time symmetric qubit regularization of the asymptotically free two-dimensional O(4) model
Junzhe Zhou, Hersh Singh, Tanmoy Bhattacharya +2
We explore if space-time symmetric lattice field theory models with a finite Hilbert space per lattice site can reproduce asymptotic freedom in the two-dimensional model. We…
Sub-leading conformal dimensions at the O(4) Wilson-Fisher fixed point
Debasish Banerjee, Shailesh Chandrasekharan
In this work we focus on computing the conformal dimensions of local fields that transform in an irreducible representation of labeled with $(j_L,…
Qubit regularization of asymptotic freedom
Tanmoy Bhattacharya, Alexander J. Buser, Shailesh Chandrasekharan +2
We provide strong evidence that the asymptotically free (1+1)-dimensional non-linear O(3) sigma model can be regularized using a quantum lattice Hamiltonian, referred to as the "He…
Hamiltonian models of lattice fermions solvable by the meron-cluster algorithm
Hanqing Liu, Shailesh Chandrasekharan, Ribhu K. Kaul
We introduce a half-filled Hamiltonian of spin-half lattice fermions that can be studied with the efficient meron-cluster algorithm in any dimension. As with the usual bipartite ha…
Baryon bag simulation of QCD in the strong coupling limit
Oliver Orasch, Shailesh Chandrasekharan, Christof Gattringer +1
We explore the possibility of a simulation of strong coupling QCD in terms of so-called baryon bags. In this form the known representation in terms of monomers, dimers and baryon l…
A qubit regularization of the sigma model
Hersh Singh, Shailesh Chandrasekharan
We construct a qubit regularization of the non-linear sigma model in two and three spatial dimensions using a quantum Hamiltonian with two qubits per lattice site. Using a w…
Conformal dimensions in the large charge sectors at the O(4) Wilson-Fisher fixed point
Debasish Banerjee, Shailesh Chandrasekharan, Domenico Orlando +1
We study the O(4) Wilson-Fisher fixed point in 2+1 dimensions in fixed large-charge sectors identified by products of two spin-j representations . Using effective field…
Few-body physics on a space-time lattice in the worldline approach
Hersh Singh, Shailesh Chandrasekharan
We formulate the physics of two species of non-relativistic hard-core bosons with attractive or repulsive delta function interactions on a space-time lattice in the worldline appro…