Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Couchoud, Nicolas"'
Autor:
Couchoud, Nicolas
Dans cette thèse nous étudions la théorie des cordes en présence deD-branes et éventuellement d'orientifolds dans des espaces courbes ou dépendants du temps. Notre étude vise à comprendre certains aspects des espaces courbes et dépendant du
Autor:
Couchoud, Nicolas
Publikováno v:
JHEP 0303 (2003) 007
We review some facts about AdS2xS2 branes in AdS3xS3 with a Neveu-Schwarz background, and consider the case of Ramond-Ramond backgrounds. We compute the spectrum of quadratic fluctuations in the low-energy approximation and discuss the open-string ge
Externí odkaz:
http://arxiv.org/abs/hep-th/0301195
Autor:
Couchoud, Nicolas
Publikováno v:
JHEP 0203 (2002) 026
We study branes and orientifolds on the group manifold of SO(3). We consider particularly the case of the equatorial branes, which are projective planes. We show that a Dirac-Born-Infeld action can be defined on them, although they are not orientable
Externí odkaz:
http://arxiv.org/abs/hep-th/0201089
Publikováno v:
JHEP 0112:003,2001
We study the geometry of orientifolds in the SU(2) WZW model. They correspond to the two inequivalent, orientation-reversing involutions of $S^3$, whose fixed-point sets are: the north and south poles (O0), or the equator two-sphere (O2). We show how
Externí odkaz:
http://arxiv.org/abs/hep-th/0111002
Autor:
Couchoud, Nicolas
Publikováno v:
Physique mathématique [math-ph]. Université Pierre et Marie Curie-Paris VI, 2004. Français. ⟨NNT : ⟩
Physique mathématique [math-ph]. Université Pierre et Marie Curie-Paris VI, 2004. Français
Physique mathématique [math-ph]. Université Pierre et Marie Curie-Paris VI, 2004. Français
In this thesis we study string theory with D-branes and possiblyorientifolds in curved or time-dependent spaces. Our study aims atunderstanding some aspects of curved and time-dependent spaces, notably because of their importance in cosmology.The fir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::f0bdfd9b35b30275477e6a06c0e453f1
https://theses.hal.science/tel-00008263/file/tel-00008263.pdf
https://theses.hal.science/tel-00008263/file/tel-00008263.pdf