Results 121 to 130 of about 99,297 (275)
Modern Physics Letters A, 2005 The Randall–Sundrum two-brane model admits the flat-brane Lorentz-invariant vacuum solution only if the branes have exactly opposite tensions. We pay attention to this condition and propose a generalization of this model in which two branes are described by actions of the same form and with the same matter content but with opposite signs. In this way,
Yuri Shtanov, Alexander Viznyuk
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Zdravniški Vestnik, 2006 Background: In the article we present laparoscopic procedures of colon at Slovenj Gradec General Hospital.Patients and methods: From 1999 to 2005 we performed 71 laparoscopic procedures of colon: segmental resections, left and right hemicolectomies, low ...
Brane Breznikar
doaj
D3-brane loop amplitudes from M5-brane tree amplitudes
Journal of High Energy Physics, 2020 We study loop corrections to scattering amplitudes in the world-volume theory of a probe D3-brane, which is described by the supersymmetric Dirac-Born-Infeld theory.
Congkao Wen, Shun-Qing Zhang
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On (non)integrability of classical strings in p-brane backgrounds [PDF]
, 2012 We investigate the question of possible integrability of classical string motion in curved p-brane backgrounds. For example, the D3-brane metric interpolates between the flat and the AdS5 × S5 regions in which string propagation is integrable.
A. Stepanchuk, A. Tseytlin
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On Calabi‐Yau Manifolds at Strong Topological String Coupling
Fortschritte der Physik, Volume 72, Issue 12, December 2024.Abstract It was recently shown that integrating out M2 states on Calabi‐Yau manifolds captures non‐perturbative topological string physics in the free energy. In this note, It has been shown that the resulting expression manifests a certain duality symmetry: the free energy at strong string coupling is equal to the Calabi‐Yau period at weak string ...
Jarod Hattab, Eran Palti
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Open String Renormalization Group Flow as a Field Theory
Fortschritte der Physik, Volume 72, Issue 11, November 2024.Abstract This article shows that the integral flow‐lines of the RG‐flow of open string theory can be interpreted as the solitons of a Hořova–Lifshitz sigma‐model of open membranes. The authors argue that the effective background description of this model implies the g‐theorem of open string theory.
Julius Hristov
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Nuclear Physics B - Proceedings Supplements, 1997 Some aspects of the role of p-branes in non-perturbative superstring theory and M-theory are reviewed. It is then shown how the Chern-Simons terms in D=10 and D=11 supergravity theories determine which branes can end on which, i.e. the `brane boundary rules'.
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de Sitter State in Heterotic String Theory
Fortschritte der Physik, Volume 72, Issue 11, November 2024.Abstract Recent no‐go theorems have ruled out four‐dimensional classical de Sitter vacua in heterotic string theory. On the other hand, the absence of a well‐defined Wilsonian effective action and other related phenomena also appear to rule out such time‐dependent vacua with de Sitter isometries, even in the presence of quantum corrections.
Stephon Alexander +4 more
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Giant D5 brane holographic Hall state [PDF]
, 2012 A bstractWe find a new holographic description of strongly coupled defect field theories using probe D5 branes. We consider a system where a large number of probe branes, which are asymptotically D5 branes, blow up into a D7 brane suspended in the bulk ...
C. Kristjansen, G. Semenoff
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The Potential for Political Scientists to Remain Relevant: A Comment on Flinders
Swiss Political Science Review, Volume 30, Issue 3, Page 214-222, September 2024.Abstract Brans and Timmermans respond to Flinders' concerns about the potential irrelevance of political science due to the pressures of impact regimes. Based on a 2018 survey of 12,400 European political scientists, they show that 80% of political scientists actively engage in policy advising.
Marleen Brans, Arco Timmermans
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