Universal dimer–dimer scattering in lattice effective field theory

Autor: Serdar Elhatisari, Kris Katterjohn, Dean Lee, Ulf-G. Meißner, Gautam Rupak

Publikováno v: Physics Letters B, Vol 768, Iss C, Pp 337-344 (2017)

We consider two-component fermions with short-range interactions and large scattering length. This system has universal properties that are realized in several different fields of physics. In the limit of large fermion–fermion scattering length aff

Externí odkaz: https://doaj.org/article/4d2504796b8a48fbb7e0fdf4f39abdb5

Wave function matching for the quantum many-body problem

Autor: Dean Lee, Serdar Elhatisari, Lukas Bovermann, Evgeny Epelbaum, Dillon Frame, Fabian Hildenbrand, Myungkuk Kim, Youngman Kim, Hermann Krebs, Timo Lähde, Ning Li, Bing-Nan Lu, Yuanzhuo Ma, Ulf-G. Meissner, Gautam Rupak, Shihang Shen, Young-Ho Song, Gianluca Stellin

We introduce a new approach for solving quantum many-body systems called wave function matching. Wave function matching transforms the interaction between particles so that the wave functions at short distances match that of an easily computable inte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e72bc1e612d1f2927cbf67e230eca557
https://hal.science/hal-03850894

Coupled-channel treatment of $${\varvec{^7}}$$Li$${\varvec{(n,\gamma )^8}}$$Li in effective field theory

Autor: Pradeepa Premarathna, Gautam Rupak, Renato Higa

Publikováno v: The European Physical Journal A. 57

The E1 contribution to the capture reaction $$^7\mathrm {Li}(n,\gamma )^8\mathrm {Li}$$ is calculated at low energies. We employ a coupled-channel formalism to account for the $$^7\mathrm {Li}^\star $$ excited core contribution. We develop a halo eff

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2218331b20177fb18f92cd9d1b9a2ad8
https://doi.org/10.1140/epja/s10050-021-00516-6

White paper: from bound states to the continuum

Autor: Andrey M. Shirokov, Heiko Hergert, Charlotte Elster, Jimmy Rotureau, Remco Zegers, Xilin Zhang, Dean Lee, Vladimir Zelevinsky, Pierre Descouvemont, B. S. Hu, Marek Ploszajczak, Alexander Volya, Witold Nazarewicz, Rodrigo Navarro Perez, Ian J. Thompson, Filomena Nunes, Alexis Mercenne, Mark A. Caprio, L. Hlophe, Konstantinos Kravvaris, Furong Xu, Sonia Bacca, Jin Lei, Bruce R. Barrett, Calvin W. Johnson, Sebastian König, Naftali Auerbach, K. Fossez, Gautam Rupak, James P. Vary, Morten Hjorth-Jensen, Patrick J. Fasano, Andrea Idini, Carl R. Brune, Rodolfo M. Id Betan, W. H. Dickhoff, Kristina D. Launey

Publikováno v: Journal of Physics G Nuclear Physics
From Bound States to the Continuum
Journal of Physics G Nuclear Physics, Institute of Physics (IOP), 2020, 47 (12), pp.123001. ⟨10.1088/1361-6471/abb129⟩
Journal of physics. G, Nuclear and particle physics, 47 (12
J.Phys.G
J.Phys.G, 2020, 47 (12), pp.123001. ⟨10.1088/1361-6471/abb129⟩

This white paper reports on the discussions of the 2018 Facility for Rare Isotope Beams Theory Alliance (FRIB-TA) topical program ‘From bound states to the continuum: Connecting bound state calculations with scattering and reaction theory’. One o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aaf2fd61a6d8b0aa657e10cd602f56e3
https://hal.archives-ouvertes.fr/hal-02403537

Universal behavior of $p$-wave proton-proton fusion near threshold

Autor: Gautam Rupak, Bijaya Acharya, Lucas Platter

We calculate the $p$-wave contribution to the proton-proton fusion $S$ factor and its energy derivative in pionless effective field theory (EFT) up to next-to-leading order. The leading contributions are given by a recoil piece from the Gamow-Teller

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f99dace252ea4aa7f657bc8bf9cf48fa
http://arxiv.org/abs/1903.02590