16 papers
On BPS Branes
Cumrun Vafa, David H. Wu, Kai Xu
We study supersymmetric BPS branes (BPS-B) in supergravity theories. Some of these states are anticipated by BPS black-brane (BPS-BB) solutions of supergravity. In particular, we d…
Evolving Dark Sector and the Dark Dimension Scenario
Alek Bedroya, Georges Obied, Cumrun Vafa +1
String theory naturally leads to the expectation that dark energy is not stable, and may be evolving as captured by the Swampland de Sitter conjectures. Moreover, motivated by the…
Isolated Critical Points for Scherk-Schwarz Compactifications of M-theory
Zihni Kaan Baykara, Shi Chen, Cumrun Vafa
We consider Scherk-Schwarz compactifications of M-theory (toroidal compactifications with a non-trivial spin structure) in various dimensions and find isolated critical points of t…
Bounds on Discrete Gauge Symmetries in Supergravity
Zihni Kaan Baykara, Markus Dierigl, Hee-Cheol Kim +2
We place bounds on the order of enhanced discrete gauge symmetries that act on massless fields and thus arise at subloci of the moduli space in supergravity theories. We focus on s…
A Duality Web for Non-Supersymmetric Strings
Zihni Kaan Baykara, Matilda Delgado, Emilian Dudas +2
Motivated by the recently proposed geometric descriptions of 0A and 0B in M-theory and F-theory, we propose a web of duality among non-supersymmetric strings. In particular we argu…
M-theory on as Type 0A
Zihni Kaan Baykara, Emilian Dudas, Cumrun Vafa
We propose an exotic geometric M-theory dual for the weak coupling Type 0A string: compactification on a sub-Planckian (two circles connected at a point), where stron…