Zobrazeno 1 - 10
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pro vyhledávání: '"Schindler, Matthias R."'
We explore potential explanations for why using large-$N_c$ ($N_c$ is the number of colors) scaling to determine the relative size of few-nucleon low-energy operators agrees with experiment even when dynamical $\Delta$'s are not explicitly included.
Externí odkaz:
http://arxiv.org/abs/2411.01715
We present a method for ordering two-nucleon interactions based upon their scaling with the number of QCD colors, $N_c$, in the limit that $N_c$ becomes large. Available data in the two-nucleon sector shows general agreement with this ordering, indic
Externí odkaz:
http://arxiv.org/abs/2212.13049
Chiral perturbation theory (ChPT) is an effective field theory that describes the properties of strongly-interacting systems at energies far below typical hadron masses. The degrees of freedom are hadrons instead of the underlying quarks and gluons.
Externí odkaz:
http://arxiv.org/abs/2211.17031
Autor:
Tews, Ingo, Davoudi, Zohreh, Ekström, Andreas, Holt, Jason D., Becker, Kevin, Briceño, Raúl, Dean, David J., Detmold, William, Drischler, Christian, Duguet, Thomas, Epelbaum, Evgeny, Gasparyan, Ashot, Gegelia, Jambul, Green, Jeremy R., Grießhammer, Harald W., Hanlon, Andrew D., Heinz, Matthias, Hergert, Heiko, Hoferichter, Martin, Illa, Marc, Kekejian, David, Kievsky, Alejandro, König, Sebastian, Krebs, Hermann, Launey, Kristina D., Lee, Dean, Navrátil, Petr, Nicholson, Amy, Parreño, Assumpta, Phillips, Daniel R., Płoszajczak, Marek, Ren, Xiu-Lei, Richardson, Thomas R., Robin, Caroline, Sargsyan, Grigor H., Savage, Martin, Schindler, Matthias R., Shanahan, Phiala E., Springer, Roxanne P., Tichai, Alexander, van Kolck, Ubirajara, Wagman, Michael L., Walker-Loud, André, Yang, Chieh-Jen, Zhang, Xilin
Publikováno v:
Few-Body Systems 63, 67 (2022)
This is a collection of perspective pieces contributed by the participants of the Institute of Nuclear Theory's Program on Nuclear Physics for Precision Nuclear Physics which was held virtually from April 19 to May 7, 2021. The collection represents
Externí odkaz:
http://arxiv.org/abs/2202.01105
Publikováno v:
Phys. Rev. C 103, 055501 (2021)
The interpretation of experiments that search for neutrinoless double beta decay relies on input from nuclear theory. Cirigliano et al. recently showed that, for the light Majorana exchange formalism, effective field theory calculations require a $nn
Externí odkaz:
http://arxiv.org/abs/2102.02184
Publikováno v:
Phys. Rev. C 103, 054004 (2021)
We extend from operators with one derivative to operators with three derivatives the analysis of two-body hadronic parity violation in a combined pionless effective field theory (EFT$_{\pi\!/}$) and large-$N_c$ expansion, where $N_c$ is the number of
Externí odkaz:
http://arxiv.org/abs/2012.02180
Publikováno v:
Phys. Rev. C 104, 024002 (2021)
We calculate the electric dipole moments (EDMs) of three-nucleon systems at leading order in pionless effective field theory. The one-body contributions that arise from permanent proton and neutron EDMs and the two-body contributions that arise from
Externí odkaz:
http://arxiv.org/abs/2011.01885
Publikováno v:
Phys. Rev. C 101, 055505 (2020)
We analyze magnetic and axial two-nucleon contact terms in a combined large-$N_c$ and pionless effective field theory expansion. These terms play important roles in correctly describing, e.g., the low-energy cross section of radiative neutron capture
Externí odkaz:
http://arxiv.org/abs/2002.00986
Autor:
Briceño, Raúl A., Davoudi, Zohreh, Hansen, Maxwell T., Schindler, Matthias R., Baroni, Alessandro
Publikováno v:
Phys. Rev. D 101, 014509 (2020)
A relation is presented between single-hadron long-range matrix elements defined in a finite Euclidean spacetime, and the corresponding infinite-volume Minkowski amplitudes. This relation is valid in the kinematic region where any number of two-hadro
Externí odkaz:
http://arxiv.org/abs/1911.04036
Publikováno v:
Phys. Rev. D 100, 075031 (2019)
Lorentz and CPT violation in hadronic physics must be tied to symmetry violations at the underlying quark and gluon level. Chiral perturbation theory provides a method for translating novel operators that may appear in the Lagrange density for color-
Externí odkaz:
http://arxiv.org/abs/1907.02490