Results 91 to 100 of about 23,658,748 (362)
Large-N ℂPN − 1 sigma model on a finite interval
, 2016 A bstractWe analyze the two-dimensional ℂPN − 1 sigma model defined on a finite space interval L, with various boundary conditions, in the large N limit.
S. Bolognesi, K. Konishi, K. Ohashi
semanticscholar +1 more source
Tree-level amplitudes in the nonlinear sigma model [PDF]
, 2013 A bstractWe study in detail the general structure and further properties of the tree-level amplitudes in the SU(N) nonlinear sigma model. We construct the flavor-ordered Feynman rules for various parameterizations of the SU(N) fields U (x), write down ...
K. Kampf, J. Novotný, J. Trnka
semanticscholar +1 more source
Linear sigma models with torsion [PDF]
Journal of High Energy Physics, 2011 Gauged linear sigma models with (0,2) supersymmetry allow a larger choice of couplings than models with (2,2) supersymmetry. We use this freedom to find a fully linear construction of torsional heterotic compactifications, including models with branes.
Savdeep Sethi, Callum Quigley
openaire +3 more sources
Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms
FEBS Letters, EarlyView.Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze +3 more
wiley +1 more source
Phase transitions in three-dimensional loop models and the $CP^{n-1}$ sigma model [PDF]
, 2013 We consider the statistical mechanics of a class of models involving close-packed loops with fugacity $n$ on three-dimensional lattices. The models exhibit phases of two types as a coupling constant is varied: in one, all loops are finite, and in the ...
A. Nahum +4 more
semanticscholar +1 more source
DUALITY IN FUZZY SIGMA MODELS [PDF]
International Journal of Modern Physics A, 2004 Nonlinear "sigma" models in two dimensions have BPS solitons which are solutions of self- and anti-self-duality constraints. In this paper, we find their analogues for fuzzy sigma models on fuzzy spheres which were treated in detail by us in earlier work.
A. P. Balachandran, Giorgio Immirzi
openaire +3 more sources
Integrable deformations of sigma models [PDF]
Journal of Physics A: Mathematical and Theoretical, 2022 Abstract In this pedagogical review we introduce systematic approaches to deforming integrable two-dimensional sigma models. We use the integrable principal chiral model and the conformal Wess–Zumino–Witten model as our starting points and explore their Yang–Baxter and current–current deformations.
openaire +3 more sources
FEBS Letters, EarlyView.α2 → 8 polysialic acid elicits poor immunogenicity. Small‐angle scattering shows a supramolecular structure with parallel‐chain binding, although in different forms at μm and mm calcium. The major histocompatibility complex requires molecular weights around 2000 Da to produce antibodies, and 2000 Da polysialic oligomers will bind in these structures ...
Kenneth A. Rubinson
wiley +1 more source
Casimir amplitudes in a quantum spherical model with long-range interaction
, 2000 A $d$-dimensional quantum model system confined to a general hypercubical geometry with linear spatial size $L$ and ``temporal size'' $1/T $ ($T$ - temperature of the system) is considered in the spherical approximation under periodic boundary conditions.
Chamati, H. +2 more
core +1 more source
Poisson-Lie T-duals of the bi-Yang-Baxter models [PDF]
, 2016 We prove the conjecture of Sfetsos, Siampos and Thompson that suitable analytic continuations of the Poisson-Lie T-duals of the bi-Yang-Baxter sigma models coincide with the recently introduced generalized lambda models. We then generalize this result by
Klimcik, C.
core +4 more sources