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pro vyhledávání: '"Michael Buballa"'
Autor:
Michael Buballa, Stefano Carignano
Publikováno v:
Physics Letters B, Vol 791, Iss , Pp 361-366 (2019)
The effect of explicit chiral-symmetry breaking on inhomogeneous chiral phases is studied within a Nambu–Jona-Lasinio model with nonzero current quark mass. Generalizing an earlier result obtained in the chiral limit, we show within a Ginzburg-Land
Externí odkaz:
https://doaj.org/article/73a904f383f144c8a8bb7f7e43049d0d
Publikováno v:
Physics Letters B, Vol 747, Iss C, Pp 529-535 (2015)
We study the behavior of the dual quark condensate Σ1 in the Nambu–Jona-Lasinio (NJL) model and its nonlocal variant. In quantum chromodynamics Σ1 can be related to the breaking of the center symmetry and is therefore an (approximate) order param
Externí odkaz:
https://doaj.org/article/4e3b6ff583bb49ce89deb4d3104516cc
Autor:
Adrian Koenigstein, Martin J. Steil, Nicolas Wink, Eduardo Grossi, Jens Braun, Michael Buballa, Dirk H. Rischke
Publikováno v:
Physical Review D. 106
The functional renormalization group (FRG) approach is a powerful tool for studies of a large variety of systems, ranging from statistical physics over the theory of the strong interaction to gravity. The practical application of this approach relies
Publikováno v:
Physical Review C. 104
We present a study of the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}p\ensuremath{\rightarrow}n{e}^{+}{e}^{\ensuremath{-}}$ for $\sqrt{s}=1.49\phantom{\rule{0.16em}{0ex}}\mathrm{GeV}$, including nonresonant Born terms and contributions of the $N(14
Autor:
Stefano Carignano, Michael Buballa
Publikováno v:
Physics Letters
Physics Letters B, Vol 791, Iss, Pp 361-366 (2019)
Physics Letters B, Vol 791, Iss, Pp 361-366 (2019)
The effect of explicit chiral-symmetry breaking on inhomogeneous chiral phases is studied within a Nambu-Jona-Lasinio model with nonzero current quark mass. Generalizing an earlier result obtained in the chiral limit, we show within a Ginzburg-Landau
Publikováno v:
Physical Review
We study the phase structure of the two-flavor Nambu--Jona-Lasinio (NJL) model in the chiral limit, extending a previous study of the competition of an inhomogeneous chiral phase and a two-flavor color-superconducting (2SC) phase [1, 2]. There, an an
Autor:
Michael Buballa, Stefano Carignano
Publikováno v:
Physical Review
We investigate the effect of strange quark degrees of freedom on the formation of inhomogeneous chiral condensates in a three-flavor Nambu--Jona-Lasinio model in mean-field approximation. A Ginzburg-Landau study complemented by a stability analysis a
Publikováno v:
Physical Review
The phase diagram of the Gross-Neveu model in $2+1$ space-time dimensions at non-zero temperature and chemical potential is studied in the limit of infinitely many flavors, focusing on the possible existence of inhomogeneous phases, where the order p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1413c4d83468d35fd82ada22dc6dc814
We investigate the existence of inhomogeneous chiral phases in the quark-meson model with explicit chiral-symmetry breaking. We find that the inhomogeneous region shrinks with increasing pion masses but survives for the physical value of m_pi. The in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47d7319da36a6e300d49dddfa4ca044d
Autor:
Michael Buballa, Stefano Carignano
Several model calculations of the QCD phase structure at nonzero temperature and density suggest that in certain regions of the phase diagram inhomogeneous condensates are favored over homogeneous ones. In particular, in a two-flavor NJL model in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97691f781324ff35dcdf5a643133e463
http://arxiv.org/abs/1906.03241
http://arxiv.org/abs/1906.03241