Zobrazeno 1 - 10
of 178
pro vyhledávání: '"Hofmann, Christoph P."'
Autor:
Hofmann, Christoph P.
Counterintuitive order-disorder phenomena emerging in antiferromagnetically coupled spin systems have been reported in various studies. Here we perform a systematic effective field theory analysis of two-dimensional bipartite quantum Heisenberg antif
Externí odkaz:
http://arxiv.org/abs/2106.06852
Autor:
Hofmann, Christoph P.
While it is known that the QCD vacuum in a magnetic background exhibits both diamagnetic and paramagnetic characteristics in the low-energy domain, a systematic investigation of the corresponding phases emerging in the pion-dominated regime is still
Externí odkaz:
http://arxiv.org/abs/2103.04937
Autor:
Hofmann, Christoph P.
Publikováno v:
Phys. Rev. D 104, 014025 (2021)
We explore the low-energy regime of quantum chromodynamics subjected to an external magnetic field by deriving the two-loop representations for the entropy density and the magnetization within chiral perturbation theory (CHPT). At fixed temperature,
Externí odkaz:
http://arxiv.org/abs/2012.06461
Autor:
Hofmann, Christoph P.
We derive higher-order corrections in the magnon dispersion relations for two- and three-dimensional antiferromagnets exposed to magnetic and staggered fields that are mutually aligned. "Dressing" the magnons is the prerequisite to separate the low-t
Externí odkaz:
http://arxiv.org/abs/2009.06584
Autor:
Hofmann, Christoph P.
Using systematic effective field theory, we explore the properties of antiferromagnetic films subjected to magnetic and staggered fields that are either mutually aligned or mutually orthogonal. We provide low-temperature series for the entropy densit
Externí odkaz:
http://arxiv.org/abs/2008.12423
Autor:
Hofmann, Christoph P.
Publikováno v:
Phys. Rev. D 102, 094010 (2020)
We present two-loop results for the quark condensate in an external magnetic field within chiral perturbation theory using coordinate space techniques. At finite temperature, we explore the impact of the magnetic field on the pion-pion interaction in
Externí odkaz:
http://arxiv.org/abs/2006.07717
Autor:
Hofmann, Christoph P.
Publikováno v:
Phys. Rev. D 101, 114031 (2020)
While the partition function for QCD in a magnetic field $H$ has been calculated before within chiral perturbation theory up to two-loop order, our investigation relies on an alternative representation for the Bose functions which allows for a clear-
Externí odkaz:
http://arxiv.org/abs/2004.01247
Autor:
Hofmann, Christoph P.
We explore the behavior of the order parameter and the magnetization of antiferromagnetic solids subjected to mutually parallel staggered and magnetic fields. The effective field theory analysis of the partition function is taken up to the two-loop l
Externí odkaz:
http://arxiv.org/abs/2002.02958
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Brauner, Tomáš, Hofmann, Christoph P.
We analyze the thermodynamic properties of antiferromagnetic solids subjected to a combination of mutually orthogonal uniform magnetic and staggered fields. Low-temperature series for the pressure, order parameter and magnetization up to two-loop ord
Externí odkaz:
http://arxiv.org/abs/1907.11480