High Energy Physics - Lattice Papers of the Week

We construct a primitive gate set for the digital quantum simulation of the $648$-element discrete subgroup of $SU(3)$, $\dsb$.

Abstract We investigate the thermodynamic properties, chiral phase transitions, and net-baryon number fluctuations in the two-flavor NJL and PNJL models from the perspective of renormalization group (RG) consistency.

We construct an exact map between continuum fermion fields and lattice fields in 1+1 dimensions.

Because of the fermion doubling problem, it has been a longstanding challenge to describe a lattice algorithm for studying four-dimensional gauge theories coupled to chiral fermions.

Using infinite matrix product states, we simulate the canonical 1+1-dimensional chiral gauge theory, the 34-50 model, and find excellent agreement with analytic predictions, showing that a finite-dimensional local Hilbert space at $N=6$ reproduces the expected infrared physics of the continuum 34-50 model.

We propose a staged program in which quantum simulations first provide qualitative modifications to event generators and later provide quantitative input.

We propose a new set of functions, named Relative Spin Wave Functions (RSWFs), defined via covariant pure boosts to a common rest frame.

Although tremendous progress has been made over the past decades in our understanding of QCD in the nuclear physics context, through perturbative methods, lattice QCD, and effective theory descriptions, phenomena that are intrinsically connected to real-time dynamics, highly entangled many-body evolution, or finite density regimes remain only partially accessible with existing approaches. In this article, we argue that QIS can help realize a new paradigm for addressing these open questions.

However, the effects on quantized charge pumping at an interacting gapped boundary are unclear. We address this using density-matrix renormalization group simulations of a four-leg ladder quasi-(2+1)d realization of the (1+1)d 3-4-5-0 lattice chiral fermion model with six-fermion interactions at one edge.

We study the confining flux tube of the trace-deformed $\mathrm{SU}(2)$ theory in three dimensions with lattice simulations of Polyakov loop correlators.

Hybrid qubit-qumode architectures avoid this by encoding bosonic fields directly in oscillators. We formulate scattering in the (1+1)-dimensional Yukawa theory for such a device, with staggered fermions on qubits and the scalar on qumodes.

These developments have sparked rapid progress in first-principles studies of the x-dependent structure of hadrons, including gluon PDFs of the nucleon and pseudoscalar mesons. In this review, we summarize recent advances in lattice QCD calculations of gluon PDFs using the LaMET and pseudo-PDF methods, discuss the current status and impacts of these developments, and highlight the remaining challenges and future opportunities.

We construct a generative network for Monte-Carlo sampling in lattice field theories and beyond, for which the layerwise propagation is computed and optimised independently on each layer.

We construct a quantum measurement protocol for estimating the Rényi entanglement asymmetry, which quantifies symmetry breaking at the level of a subsystem and provides a probe of the quantum Mpemba effect.

We demonstrate the method in one to three dimensions, obtaining correlator and spectral bounds that capture generalized free field behavior and reproduce the characteristic Ising kinks in two and three dimensions.

We formulate the corresponding Bayesian inference problem for a broad class of topological stabilizer codes by mapping it to classical spin models with generalized symmetries.

In solids with physical boundaries, a bulk energy gap formed exclusively by extended bulk states is conventionally expected to be governed primarily by the interior bulk region, with only a minor contribution from the boundaries. Here we show that, in stark contrast to this conventional expectation, the bulk gap of armchair graphene nanoribbons in the $N_w=3p+2$ family with $p\in\mathbb{Z}\ge 0$ can be fully controlled through the hoppings solely at the boundaries.

Hamiltonian effective field theory provides a practical framework for connecting hadron dynamics with experimental observables and lattice QCD results. In this review, we outline the infinite- and finite-volume formulations of Hamiltonian effective field theory and survey its applications to light-hadron spectroscopy and resonance structure.

Motivated by the constraint structure of general dilaton gravity, we introduce static charges coupled to the non-compact gauge field, which can be realised by single-fermion degrees of freedom living in an additional, synthetic dimension.