Quasielastic lepton scattering and back-to-back nucleons in the short-time approximation

Pastore, Saori; Carlson, J.; Gandolfi, Stefano; Schiavilla, R.; Wiringa, R. B.

doi:10.1103/physrevc.101.044612

Cited by 54 publications

(79 citation statements)

References 59 publications

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“…In future, local chiral interactions will continue to serve as input for precise QMC methods to systematically study, for example, electroweak reactions, along the lines of Refs. [118,119,120,121,122,123,124] and infinite matter also at finite proton fractions.…”

Section: Discussionmentioning

confidence: 99%

Local Nucleon-Nucleon and Three-Nucleon Interactions Within Chiral Effective Field Theory

Piarulli¹,

Tews

2020

Front. Phys.

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To obtain an understanding of the structure and reactions of nuclear systems from first principles has been a long-standing goal of nuclear physics. In this respect, few-and many-body systems provide a unique laboratory for studying nuclear interactions. During the past decades, the development of accurate representations of the nuclear force has undergone substantial progress. Particular emphasis has been devoted to chiral effective field theory (EFT), a low-energy effective representation of quantum chromodynamics (QCD). Within chiral EFT, many studies have been carried out dealing with the construction of both the nucleon-nucleon (NN ) and three-nucleon (3N ) interactions. The aim of the present article is to give a detailed overview of the chiral interaction models that are local in configuration space, and show recent results for nuclear systems obtained by employing these local chiral forces. Keywords: nuclear interactions, chiral effective field theory, local interactions, three-body forces, ab-initio calculations arXiv:2002.00032v1 [nucl-th] 31 Jan 2020 Piarulli et al. Local chiral interactionsIn fact, chiral symmetry is broken twofold. First, it is broken spontaneously, leading to the formation of Goldstone bosons, that can be identified with the pions. Second, chiral symmetry is also explicitly broken by the finite quark masses, which leads to the pion being pseudo-Goldstone bosons with finite but small mass. In contrast, isospin symmetry remains a good symmetry, because the ratio (m d − m u )/Λ QCD is very small, where m u 2.4 MeV and m d 4.8 MeV.These symmetries only allow certain operator structures for nuclear interactions. Galilean invariance, for instance, implies that nuclear interactions depend only on relative momenta between two nucleons, p = p i − p j , while symmetry under parity transformations implies that nuclear interactions cannot be Frontiers

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Section: Discussionmentioning

confidence: 99%

Local Nucleon-Nucleon and Three-Nucleon Interactions Within Chiral Effective Field Theory

Piarulli¹,

Tews

2020

Front. Phys.

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“…We can now start the discussion about product formulae derived from the Trotter-Suzuki expansion for the time evolution operator. At first order, we find the simple decompositions (13) and (14) presented in the main text…”

Section: Product Formulae: Analytical Boundsmentioning

confidence: 92%

“…Calculations of realistic response demonstrate that two-nucleon physics incorporates much of the information about nuclear response [14], making even such a simple problem important. The fixed particle is ultimately a source of additional final state scattering which in traditional event generators is included as a semi-classical evolution.…”

Section: Triton Toy Modelmentioning

confidence: 99%

“…These are typically relevant to inclusive scattering only, though some progress has been made towards exclusive processes. [14] Exact treatments, even for the ground state, scale exponentially in the nucleon number due to the Fermion sign problem. Constrained path algorithms are useful for low-lying states, but scattering has proven to be intractable on classical computers.…”

Section: Introductionmentioning

confidence: 99%

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Quantum computing for neutrino-nucleus scattering

Roggero

Carlson

et al. 2020

Phys. Rev. D

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Neutrino-nucleus cross section uncertainties are expected to be a dominant systematic in future accelerator neutrino experiments. The cross sections are determined by the linear response of the nucleus to the weak field of the neutrino, and are dominated by energy and distance scales of the order of the separation between nucleons in the nucleus. These response functions are potentially an important early physics application of quantum computers. Here we present an analysis of required resources and expected scaling for scattering cross section calculations. We also examine simple small-scale neutrino-nucleus models on modern quantum hardware. In this paper we use variational methods to obtain the ground state and then implement the relevant time evolution. In order to tame the errors in present-day NISQ devices we explore the use of different error-mitigation techniques to increase the fidelity of the calculations.

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“…In order to retain two-body physics, the short-time approximation (STA) [372] of the time evolution operator is taken as…”

Section: Short-time Approximation Calculations Of L 4 H E and L 12 C mentioning

confidence: 99%

Neutrino non-standard interactions: A status report

Dev

Babu

Denton

et al. 2019

SciPost Phys. Proc.

139

117

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This report summarizes the present status of neutrino non-standard interactions (NSI). After a brief overview, several aspects of NSIs are discussed, including connection to neutrino mass models, model-building and phenomenology of large NSI with both light and heavy mediators, NSI phenomenology in both short- and long-baseline neutrino oscillation experiments, neutrino cross-sections, complementarity of NSI with other low- and high-energy experiments, fits with neutrino oscillation and scattering data, DUNE sensitivity to NSI, effective field theory of NSI, as well as the relevance of NSI to dark matter and cosmology. We also discuss the open questions and interesting future directions that can be pursued by the community at large. This report is based on talks and discussions during the Neutrino Theory Network NSI workshop held at Washington University in St.~Louis from May 29-31, 2019

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Quasielastic lepton scattering and back-to-back nucleons in the short-time approximation

Cited by 54 publications

References 59 publications

Local Nucleon-Nucleon and Three-Nucleon Interactions Within Chiral Effective Field Theory

Local Nucleon-Nucleon and Three-Nucleon Interactions Within Chiral Effective Field Theory

Quantum computing for neutrino-nucleus scattering

Neutrino non-standard interactions: A status report

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