Results 51 to 60 of about 2,430,073 (342)
Mass and width of sigma(750) scalar meson from measurements of pi(-)p->pi(-)pi(+)n on polarized target [PDF]
, 1997 Model independent amplitude analyses of $\pi^- p_\uparrow \to \pi^- \pi^+ n$ on polarized target at 17.2 GeV/c reveal resonant structure of S-wave transversity amplitudes $|\bar S|^2\Sigma$ and $|S|^2\Sigma$ near 750 MeV. Simultaneous fit to $|\bar S|^2\Sigma$ and $|S|^2\Sigma$ with a single $\sigma$ pole yields $m_\sigma = 775 \pm 17$ MeV and $\Gamma_\
arxiv +1 more source
Spectra of coset sigma models [PDF]
Nuclear Physics B, 2013 43 pages, 1 ...
Candu, Constantin +2 more
openaire +3 more sources
Sigma models as Gross–Neveu models [PDF]
Theoretical and Mathematical Physics, 2021 17 pages, 1 ...
openaire +4 more sources
Topological Massive Sigma Models
, 1994 In this paper we construct topological sigma models which include a potential and are related to twisted massive supersymmetric sigma models. Contrary to a previous construction these models have no central charge and do not require the manifold to admit
Birmingham +8 more
core +3 more sources
T-duality in (2, 1) superspace
Journal of High Energy Physics, 2019 We find the T-duality transformation rules for 2-dimensional (2,1) supersymmetric sigma-models in (2,1) superspace. Our results clarify certain aspects of the (2,1) sigma model geometry relevant to the discussion of T-duality.
M. Abou-Zeid +3 more
doaj +1 more source
Orbifolds by 2-groups and decomposition
Journal of High Energy Physics, 2022 In this paper we study three-dimensional orbifolds by 2-groups with a trivially-acting one-form symmetry group BK. These orbifolds have a global two-form symmetry, and so one expects that they decompose into (are equivalent to) a disjoint union of other ...
Tony Pantev +3 more
doaj +1 more source
Nontriviality of the linear sigma model [PDF]
The European Physical Journal C, 1999 To be published in Eur. Phys.
L. R. Babukhadia, Michael D. Scadron
openaire +4 more sources
Gauged sigma models and magnetic Skyrmions
SciPost Physics, 2019 We define a gauged non-linear sigma model for a 2-sphere valued field and a $SU(2)$ connection on an arbitrary Riemann surface whose energy functional reduces to that for critically coupled magnetic skyrmions in the plane, with arbitrary ...
Bernd J Schroers
doaj +1 more source
Entanglement Entropy and Quantum Phase Transition in the O(N) σ-model
Journal of High Energy Physics, 2021 We investigate how entanglement entropy behaves in a non-conformal scalar field system with a quantum phase transition, by the replica method. We study the σ-model in 3+1 dimensions which is O(N) symmetric as the mass squared parameter μ 2 is positive ...
Jiunn-Wei Chen +2 more
doaj +1 more source
Velocity diagram of traveling waves for discrete reaction-diffusion equations [PDF]
arXiv, 2022 We consider a discrete version of reaction-diffusion equations. A typical example is the fully overdamped Frenkel-Kontorova model, where the velocity is proportional to the force. We also introduce an additional exterior force denoted by $\sigma$.
arxiv