From the 1 of 4 linked papers with an AI index.
4 papers
SU(3)-structures on quotients of 3-Sasakian orbifolds
Quentin Peres, Dimitrios Tsimpis
The paper studies how quotients of 7‑dimensional quasi‑regular 3‑Sasakian orbifolds by a Reeb vector field inherit SU(3)‑structures, computes their torsion, and identifies cases th…
Analytic results for slow-roll curved-space inflation and exponential potentials
Dimitrios Tsimpis, Govind Venugopal
We derive analytic templates for the scalar and tensor primordial power spectra describing cosmologies that transition from kinetic dominance to slow-roll inflation in the presence…
Universal Cosmologies
Paul Marconnet, Dimitrios Tsimpis
Universal cosmologies are exact solutions of 10d type IIA supergravity containing a 4d Friedmann-Lemaître-Robertson-Walker factor, that can also be repackaged as solutions of 4d m…
Holographic deformations of matrix models
Alfred Bovon, Henning Samtleben, Dimitrios Tsimpis
We study maximal supergravity in two dimensions, obtained from reduction of IIA supergravity on an sphere. The theory captures the low-lying fluctuations around the non-confo…