Chiral effective field theory
WebIn this paper, we consider two-flavor QCD at zero temperature and finite isospin chemical potential using a model-independent analysis within chiral perturbation theory at next-to-leading order. We calculate the effec… WebJun 29, 2024 · An Introduction to Effective Field Theories. Riccardo Penco. These notes are an overview of effective field theory (EFT) methods. I discuss toy model EFTs, …
Chiral effective field theory
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WebChiral perturbation theory (ChPT) is an effective field theory constructed with a Lagrangian consistent with the (approximate) chiral symmetry of quantum … WebFeb 22, 2024 · We study the $^{1}S_{0}$ proton pairing gap in $\ensuremath{\beta}$-equilibrated neutron star matter within the framework of chiral effective field theory. We focus on the role of three-body forces, which strongly modify the effective proton-proton spin-singlet interaction in dense matter. We find that three-body forces generically …
WebA nucleon-nucleon potential and consistent nuclear electromagnetic currents are derived in chiral effective field theory retaining pions and nucleons as explicit degrees of freedom. The calculation of the potential is carried out up to next-to-next-to leading order (N2LO), while the currents include up to N3LO corrections. WebApr 6, 2024 · Revisiting proton-proton fusion in chiral effectiv e field theory Bijaya Ac harya, 1, ∗ Laura Elisa Marcucci, 2, 3, † and Lucas Platter 4, 1, ‡ 1 Physics Division, Oak Ridge National Lab ...
WebMar 19, 2024 · The \(\varLambda N\) and \(\varSigma N\) interactions are considered at next-to-leading order in SU(3) chiral effective field theory. Different options for the low-energy constants that determine the strength of the contact interactions are explored. Two variants are analysed in detail which yield equivalent results for \(\varLambda N\) and … WebOct 19, 2024 · As microscopic inputs we use chiral effective field theory nucleon-nucleon interactions at next-to-next-to-leading order combined with state-of-the-art nucleonic densities. With these potentials ...
WebApr 3, 2024 · Chiral effective field theory ( EFT) provides a framework for obtaining internucleon interactions in a systematically improvable fashion from first principles, while also providing for the derivation of consistent electroweak current operators. In this work, we apply consistently derived interactions and currents towards calculating the ...
WebJul 8, 1998 · The so-called Heavy Quark Effective Theory is briefly discussed in section 6. The electroweak chiral Effective Field Theory is described in section 7, which contains a brief overview of the ... crypto coin lookupWebThe Nucleon-Nucleon Chiral Potential (I) • The nuclear force is a fundamental problem in nuclear physics • Many phenomenological descriptions available which are, however, not grounded in QCD. • Chiral Perturbation Theory (Weinberg counting): • Problem: NN interaction is non-perturbative • Weinberg’s solution: durham college environmental technologyWebSep 17, 2024 · In this article, we review the status of the calculation of nuclear currents within chiral effective field theory. After formal discussion of the unitary transformation technique and its application to nuclear currents we give all available expressions for vector, axial-vector currents. Vector and axial-vector currents are discussed up to order Q with … durham college cyber securityWebAug 1, 2024 · How chiral symmetry figures in the nuclear effective field theory is now well understood in the guise of the chiral perturbation theory and has been fairly well … durham college email sign inWebMay 12, 2015 · We calculate the nuclear and neutron matter equations of state from microscopic nuclear forces at different orders in chiral effective field theory and with varying momentum-space cutoff scales. We focus attention on how the order-by-order convergence depends on the choice of resolution scale and the implications for … crypto coin logo galleryWebWe present a formal framework for the derivation of electroweak multipole operator from chiral effective field theory (ChEFT) charge and current operators. We explicitly derive … cryptocoin logoWebIn particular, we have discussed the recent integration of nearly-local interactions derived within chiral effective field theory, both with and without the inclusion of Δ degrees of freedom, in quantum Monte Carlo methods, namely variational Monte Carlo, Green's function Monte Carlo, and auxiliary field diffusion Monte Carlo. crypto coin machine