Results 71 to 80 of about 136,944 (187)

Generalized K\"ahler Geometry in (2,1) superspace

, 2012
Two-dimensional (2,2) supersymmetric nonlinear sigma models can be described in (2,2), (2,1) or (1,1) superspaces. Each description emphasizes different aspects of generalized K\"ahler geometry. We investigate the reduction from (2,2) to (2,1) superspace.
Hull, Chris, Lindström, Ulf, Roček, Martin, von Unge, Rikard, Zabzine, Maxim   +4 more
core   +1 more source

Extended supersymmetry of semichiral sigma model in 4D [PDF]

, 2014
Briefly: Using a novel $(1,1)$ superspace formulation of semichiral sigma models with $4D$ target space, we investigate if an extended supersymmetry in terms of semichirals is compatible with having a $4D$ target space with torsion.
Lindstrom, Ulf
core   +2 more sources

Sociale netværkssider og digital ungdomskultur: Når unge praktiserer venskab på nettet [Social Network Sites and Digital Youth Culture: When young people practice friendship online]

MedieKultur: Journal of Media and Communication Research, 2009
Arto, Facebook og MySpace er nogle af de internetfællesskaber, som flere hundredtusinde danskere i løbet af ganske få år har oprettet profiler på.
Malene Charlotte Larsen
doaj  

Generalized Calabi-Yau metric and Generalized Monge-Ampere equation

, 2010
In the neighborhood of a regular point, generalized Kahler geometry admits a description in terms of a single real function, the generalized Kahler potential.
Hull, Chris M., Lindstrom, Ulf, Rocek, Martin, von Unge, Rikard, Zabzine, Maxim   +4 more
core   +1 more source

Moving vortices in noncommutative gauge theory

, 2003
Exact time-dependent solutions of nonrelativistic noncommutative Chern - Simons gauge theory are presented in closed analytic form. They are different from (indeed orthogonal to) those discussed recently by Hadasz, Lindstrom, Rocek and von Unge.
Bak, Dunne, Hadasz, Horváthy, Jackiw, Jackiw, Jackiw, Lozano, Lévy-Leblond, P.A. Horváthy, P.C. Stichel, Szabo   +11 more
core   +3 more sources

Sigma models with off-shell N=(4,4) supersymmetry and noncommuting complex structures

, 2010
We describe the conditions for extra supersymmetry in N=(2,2) supersymmetric nonlinear sigma models written in terms of semichiral superfields. We find that some of these models have additional off-shell supersymmetry.
A Bredthauer, A Bredthauer, A Sevrin, B Ezhuthachan, CM Hull, CM Hull, EA Ivanov, EA Ivanov, Itai Ryb, J Bogaerts, K Yano, K Yano, M. Göteman, M. Roček, MT Grisaru, MT Grisaru, N Hitchin, PS Howe, PS Howe, S Ishihara, SJ Gates Jr, T Buscher, U Lindström, U Lindström, U Lindström, U Lindström, U Lindström, U Lindström, U Lindström, U. Lindström   +29 more
core   +1 more source

Institutionell oordning

Kulturella Perspektiv, 2019
In the fall of 2016 the word feud, that was later referred to ”as ”the museum debate”, took off in Swedish media. This public discussion was initiated by the Swedish journalist and China-expert Ola Wong. Within a short time span he published two articles,
Elin von Unge
doaj   +1 more source

A Picture of D-branes at Strong Coupling [PDF]

, 1997
We use a phase space description to (re)derive a first order form of the Born-Infeld action for D-branes. This derivation also makes it possible to consider the limit where the tension of the D-brane goes to zero. We find that in this limit, which can be
Abou Zeid, Banks, Bergshoeff, Davis, Ganor, Ganor, Ganor, Hanany, Hassani, Isberg, Ishibashi, Karlhede, Lindström, Lindström, Lindström, Lindström, Mayr, Polchinski, Rikard von Unge, Strominger, Tseytlin, Ulf Lindström, Witten   +22 more
core   +3 more sources

Off-shell N=(4,4) supersymmetry for new (2,2) vector multiplets

, 2010
We discuss the conditions for extra supersymmetry of the N=(2,2) supersymmetric vector multiplets described in arXiv:0705.3201 [hep-th] and in arXiv:0808.1535 [hep-th]. We find (4,4) supersymmetry for the semichiral vector multiplet but not for the Large
I. Ryb, M Goteman, M Goteman, M. Göteman, M. Roček, MT Grisaru, NJ Hitchin, SJ Gates, SJ Gates Jr, SJ Gates Jr, SJ Gates Jr, T Buscher, U Lindström, U Lindström, U Lindström, U Lindström, U Lindström, U. Lindström, W Merrell, W Merrell   +19 more
core   +1 more source

Non-Renormalization Theorems for Operators with Arbitrary Numbers of Derivatives in ${\cal N}=4$ Yang Mills Theory

, 1999
We generalize the proof of the non-renormalization of the four derivative operators in ${\cal N}=4$ Yang Mills theory with gauge group SU(2) to show that certain terms with 2N derivatives are not renormalized in the theory with gauge group SU(N).
Banks, Berenstein, Das, Dine, Gonzalez-Rey, Josh Gray, Michael Dine, Paban, Periwal, Seiberg, Sethi, Taylor   +11 more
core   +1 more source