Results 61 to 70 of about 1,518,477 (199)

N = 2 supersymmetric sigma-models and duality [PDF]

, 2010
For two families of four-dimensional off-shell N = 2 supersymmetric nonlinear sigma-models constructed originally in projective superspace, we develop their formulation in terms of N = 1 chiral superfields.
A Galperin, A Galperin, A Karlhede, A Swann, AA Rosly, AS Galperin, B Wit de, B Wit de, B Wit de, B Wit de, B Zumino, B Zumino, CM Hull, D Jain, D Kaledin, D Kaledin, F Gonzalez-Rey, GW Gibbons, IL Buchbinder, IR Klebanov, J Bagger, J Jaegher De, J Wess, JH Park, K Galicki, L Álvarez-Gaumé, M Arai, M Arai, M Arai, M Roček, MF Sohnius, NJ Hitchin, P Fayet, Sergei M. Kuzenko, SJ Gates Jr, SJ Gates Jr, SJ Gates Jr, SJ Gates Jr, SM Kuzenko, SM Kuzenko, SM Kuzenko, SM Kuzenko, SM Kuzenko, SM Kuzenko, SM Kuzenko, TL Curtright, U Lindström, U Lindström, U Lindström, U Lindström, W Siegel   +50 more
core   +2 more sources

Topological sigma models & dissipative hydrodynamics

Journal of High Energy Physics, 2016
22 pages. v2: added clarifications, fixed typos.
Haehl, Felix M, Loganayagam, R, Rangamani, Mukund   +2 more
openaire   +7 more sources

Testing dark energy models in the light of $$\sigma _8$$ σ8 tension

European Physical Journal C: Particles and Fields, 2019
It has been pointed out that there exists a tension in $$\sigma _8-\varOmega _m$$ σ8-Ωm measurement between CMB and LSS observation. In this paper we show that $$\sigma _8-\varOmega _m$$ σ8-Ωm observations can be used to test the dark energy theories. We
Gaetano Lambiase, Subhendra Mohanty, Ashish Narang, Priyank Parashari   +3 more
doaj   +1 more source

Yangian Superalgebras in Conformal Field Theory [PDF]

, 2010
Quantum Yangian symmetry in several sigma models with supergroup or supercoset as target is established. Starting with a two-dimensional conformal field theory that has current symmetry of a Lie superalgebra with vanishing Killing form we construct non ...
Arutyunov, Ashok, Ashok, Babichenko, Babichenko, Bargheer, Bena, Benichou, Benichou, Berkovits, Berkovits, Berkovits, Bernard, Bernard, Bernard, Bershadsky, Candu, Candu, Candu, Corn, Creutzig, Creutzig, Creutzig, Creutzig, Creutzig, Creutzig, Creutzig, Creutzig, Creutzig, Creutzig, Creutzig, Dolan, Dolan, Drinfelʼd, Drinfelʼd, Drummond, Drummond, Gotz, Guruswamy, Hikida, Hikida, Hikida, Iohara, Kac, Kagan, Konechny, Luscher, MacKay, Maldacena, Metsaev, Mitev, Moore, Obuse, Quella, Quella, Rozansky, Rozansky, Saleur, Schomerus, Sorokin, Stefanski, Thomas Creutzig, Witten, Zarembo, Zirnbauer   +64 more
core   +3 more sources

Extensions of the generalized hedgehog ansatz for the Einstein-nonlinear σ-model system: black holes with NUT, black strings and time-dependent solutions

Journal of High Energy Physics, 2019
We consider a class of ansätze for the construction of exact solutions of the Einstein-nonlinear σ-model system with an arbitrary cosmological constant in (3+1) dimensions.
Alex Giacomini, Marcello Ortaggio
doaj   +1 more source

A brief review of supersymmetric non-linear sigma models and generalized complex geometry [PDF]

, 2006
This is a review of the relation between supersymmetric non-linear sigma models and target space geometry. In particular, we report on the derivation of generalized K\"ahler geometry from sigma models with additional spinorial superfields.
Lindström, Ulf
core   +3 more sources

String compactifications on Calabi-Yau stacks

, 2005
In this paper we study string compactifications on Deligne-Mumford stacks. The basic idea is that all such stacks have presentations to which one can associate gauged sigma models, where the group gauged need be neither finite nor effectively-acting ...
Abouelsaood, Abramovich, Adams, Aspinwall, Aspinwall, Beauville, Bridgeland, Caldararu, Callan, Chen, Donagi, Douglas, Douglas, Douglas, Douglas, Edidin, El Kacimi-Alaoui, Eric Sharpe, Freed, Ginsparg, Gomez, Gomez, Harvey, Ito, Katz, Katz, Kresch, Mohri, Pantev, Pantev, Sharpe, Sharpe, Sharpe, Sharpe, Sharpe, Silverstein, Tony Pantev, Totaro, Vistoli, Witten, Witten, Witten   +41 more
core   +3 more sources

COMPLEXIFIED SIGMA-MODEL AND DUALITY [PDF]

Modern Physics Letters A, 2011
We show that the equations of motion associated with a complexified sigma-model action do not admit manifest dual SO (n, n) symmetry. In the process we discover new type of numbers which we called "complexoids" in order to emphasize their close relation with both complex numbers and matroids. It turns out that the complexoids allow one to consider the
openaire   +3 more sources

Twists of trigonometric sigma models

Journal of High Energy Physics
We introduce the ℤ N -twisted trigonometric sigma models, a new class of integrable deformations of the principal chiral model. Starting from 4d Chern-Simons theory on a cylinder, the models are constructed by introducing a ℤ N branch cut running along ...
Rashad Hamidi, Ben Hoare
doaj   +1 more source

Summing inflationary logarithms in nonlinear sigma models

Journal of High Energy Physics, 2022
We consider two nonlinear sigma models on de Sitter background which involve the same derivative interactions as quantum gravity but without the gauge issue.
S. P. Miao, N. C. Tsamis, R. P. Woodard
doaj   +1 more source