Results 51 to 60 of about 7,711,295 (297)

Noncommutative linear sigma models [PDF]

Nuclear Physics B, 2001
We examine noncommutative linear sigma models with U(N) global symmetry groups at the one-loop quantum level, and contrast the results with our previous study of the noncommutative O(N) linear sigma models where we have shown that Nambu-Goldstone symmetry realization is inconsistent with continuum renormalization.
Campbell, Bruce A., Kaminsky, Kirk
openaire   +2 more sources

Supergravity solution-generating techniques and canonical transformations of σ-models from O(D, D)

Journal of High Energy Physics, 2021
Within the framework of the flux formulation of Double Field Theory (DFT) we employ a generalised Scherk-Schwarz ansatz and discuss the classification of the twists that in the presence of the strong constraint give rise to constant generalised fluxes ...
Riccardo Borsato, Sibylle Driezen
doaj   +1 more source

GAUGED HETEROTIC SIGMA-MODELS [PDF]

Modern Physics Letters A, 1994
The gauging of isometries in general sigma-models which include fermionic terms which represent the interaction of strings with background Yang-Mills fields is considered. Gauging is possible only if certain obstructions are absent. The quantum gauge anomaly is discussed, and then the (1, 0) supersymmetric generalization of the gauge action given.
openaire   +3 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

International Collaborative Research Guidelines [PDF]

, 2003
Sigma provides leadership in research to enhance the health of the world\u27s people. Its vision is to create a global community of nurses who lead in using scholarship to accomplish this mission. Advancing the scientific base of nursing practice through
Sigma Theta Tau International
core   +1 more source

Anderson localization in sigma models

EPJ Web of Conferences, 2018
In QCD above the chiral restoration temperature there exists an Anderson transition in the fermion spectrum from localized to delocalized modes. We investigate whether the same holds for nonlinear sigma models which share properties like dynamical mass ...
Bruckmann Falk, Wellnhofer Jacob
doaj   +1 more source

βγ-systems interacting with sigma-models

Journal of High Energy Physics, 2020
We find a geometric description of interacting βγ-systems as a null Kac-Moody quotient of a nonlinear sigma-model for systems with varying amounts of supersymmetry.
Ulf Lindström, Martin Roček
doaj   +1 more source

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

FEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes, Jan Brysch, Carmen Gelze, Lilli Meier, Daniel Kümmel   +4 more
wiley   +1 more source

A noncommutative sigma model

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 2013
We replace the classical string theory notions of mapping between parameter space and world-time with noncommutative tori mapping between these spaces. The dynamics of mappings between different noncommutative tori are studied and noncommutative versions of the Polyakov action and the Euler-Lagrange equations are derived.
openaire   +3 more sources

PSEUDODUALITY IN SUPERSYMMETRIC SIGMA MODELS [PDF]

International Journal of Modern Physics A, 2010
We study the pseudoduality transformation in supersymmetric sigma models. We generalize the classical construction of pseudoduality transformation to supersymmetric case. We perform this both by component expansion method on manifold [Formula: see text] and by orthonormal coframe method on manifold [Formula: see text].
openaire   +2 more sources