Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Szpigel, S."'
Publikováno v:
Annals of Physics 425 (2021) 168383
In this work we have performed a detailed study of chiral nuclear forces at N4LO approximation applied to selected channels of the neutron-proton ($n p$) scattering. The idea is to analyse the different contributions to the nucleon-nucleon ($NN$) pot
Externí odkaz:
http://arxiv.org/abs/2103.13352
Publikováno v:
Annals of Physics 428 (2021) 168450
We make variational estimates for the binding energies of $^2H,~^3H,~^4He,~^{16}O,~^{40}Ca$, showing their running with the Similarity Renormalization Group (SRG) cutoff towards the infrared region and show the generalized Tjon lines that emerge from
Externí odkaz:
http://arxiv.org/abs/2103.13363
Gamma-ray continuum at > 10 MeV photon energy yields information on > 0.2 - 0.3 GeV/nucleon ions at the Sun. We use the general-purpose Monte Carlo code FLUKA (FLUktuierende KAskade) to model the transport of ions injected into thick and thin target
Externí odkaz:
http://arxiv.org/abs/2009.00414
We analyze the universality of the Unitary Fermi Gas in its ground state from a Wilsonian renormalization point of view and compute the effective range dependence of the Bertsch parameter $\xi$ exactly. To this end we construct an effective block-dia
Externí odkaz:
http://arxiv.org/abs/1712.05931
Publikováno v:
Advances in High Energy Physics, Volume 2017, Article ID 2316247
We analyse the renormalization of the of two-nucleon interaction with multiple subtractions in peripheral waves considering two chiral forces at N3LO. Phase shifts at low energies are then computed with several subtraction points below \mu = 10 / fm.
Externí odkaz:
http://arxiv.org/abs/1702.06312
We use a chiral interaction at N3LO in the 1S0 channel of the nucleon- nucleon interaction in order to investigate the on-shell transition along the similarity renormalization group flow towards the infrared limit. We find a crossover at a scale that
Externí odkaz:
http://arxiv.org/abs/1611.06799
We study the infrared limit of the similarity renormalization group (SRG) using a simple toy model for the nuclear force aiming to investigate the fixed points of the SRG evolution with both the Wilson and the Wegner generators. We show how a fully d
Externí odkaz:
http://arxiv.org/abs/1601.02360
The pairing gap plays a fundamental role in the nuclear many-body problem and many large scale and accurate mass formula fits suggest the smooth nuclear mass dependence $\Delta \sim 6(1)~ A^{-1/3}~{\rm MeV}$ in the liquid drop model which lacks a the
Externí odkaz:
http://arxiv.org/abs/1507.02475
On a finite momentum grid with N integration points and weights the Similarity Renormalization Group (SRG) with a given generator G unitarily evolves an initial interaction with a cutoff on energy differences. This steadily drives the starting Hamilt
Externí odkaz:
http://arxiv.org/abs/1404.4940
The Similarity Renormalization Group reduces the off-shellness by driving the evolved interaction towards a diagonal band. We analyze the infrared limit and the corresponding on-shell interactions and its consequences for light nuclei. Using a harmon
Externí odkaz:
http://arxiv.org/abs/1310.8246