Results 101 to 110 of about 318,690 (204)

Species Scale and Primordial Gravitational Waves

Fortschritte der Physik, Volume 72, Issue 6, June 2024.
Abstract The species scale is a field‐dependent UV cut‐off for any effective field theory weakly coupled to gravity. In this letter, it is shown that in the context of inflationary cosmology, a detection of primordial gravitational waves will set an upper bound on the decay rate |Λs′/Λs|$|\Lambda ^{\prime }_s/\Lambda _s|$ of the species scale ...
Marco Scalisi
wiley   +1 more source

Enumerating Calabi‐Yau Manifolds: Placing Bounds on the Number of Diffeomorphism Classes in the Kreuzer‐Skarke List

Fortschritte der Physik, Volume 72, Issue 5, May 2024.
Abstract The diffeomorphism class of simply connected smooth Calabi‐Yau threefolds with torsion‐free cohomology is determined via certain basic topological invariants: the Hodge numbers, the triple intersection form, and the second Chern class.
Aditi Chandra, Andrei Constantin, Cristofero S. Fraser‐Taliente, Thomas R. Harvey, Andre Lukas   +4 more
wiley   +1 more source

Non-Abelian supertubes

Journal of High Energy Physics, 2017
A supertube is a supersymmetric configuration in string theory which occurs when a pair of branes spontaneously polarizes and generates a new dipole charge extended along a closed curve.
José J. Fernández-Melgarejo, Minkyu Park, Masaki Shigemori   +2 more
doaj   +1 more source

Higher Derivative Corrections to Non-supersymmetric Extremal Black Holes in N=2 Supergravity [PDF]

, 2006
Using the entropy function formalism we compute the entropy of extremal supersymmetric and non-supersymmetric black holes in N=2 supergravity theories in four dimensions with higher derivative corrections. For supersymmetric black holes our results agree
A. Dabholkar, A. Fayyazuddin, A. Giryavets, A. Sen, A. Sen, A. Sen, A. Sinha, A. Strominger, Ashoke Sen, B. Chandrasekhar, B. de Wit, B. Sahoo, Bindusar Sahoo, D. Bak, G. Lopes Cardoso, G. Lopes Cardoso, J.M. Maldacena, K. Goldstein, M. Alishahiha, P. Kraus, P. Kraus, P. Prester, P.K. Tripathy, R. Kallosh, R. Kallosh, R. Kallosh, S. Parvizi, T. Jacobson, V. Hubeny   +28 more
core   +2 more sources

Exploring T‐Duality for Self‐Dual Fields

Fortschritte der Physik, Volume 72, Issue 5, May 2024.
Abstract Avatars of T‐duality within Sen's formalism for self‐dual field strengths in various dimensions are studied. This formalism is shown to naturally accommodate the T‐duality relation between Type IIA/IIB theories when compactified on a circle without the need for imposing the self‐duality constraint by hand, as is usually done. The study of this
Subhroneel Chakrabarti, Madhusudhan Raman   +1 more
wiley   +1 more source

Some recent results for SU(3) and octonions within the geometric algebra approach to the fundamental forces of nature

Mathematical Methods in the Applied Sciences, Volume 47, Issue 3, Page 1471-1491, February 2024.
Different ways of representing the group SU(3)$$ SU(3) $$ within a Geometric Algebra approach are explored. As part of this, we consider characteristic multivectors for SU(3)$$ SU(3) $$ and how these are linked with decomposition of generators into commuting bivectors. The setting for this work is within a 6d Euclidean Clifford Algebra.
Anthony Lasenby
wiley   +1 more source

Octonionic Magical Supergravity, Niemeier Lattices, and Exceptional & Hilbert Modular Forms

Fortschritte der Physik, Volume 72, Issue 2, February 2024.
Abstract The quantum degeneracies of Bogomolny‐Prasad‐Sommerfield (BPS) black holes of octonionic magical supergravity in five dimensions are studied. Quantum degeneracy is defined purely number theoretically as the number of distinct states in charge space with a given set of invariant labels.
Murat Günaydin, Abhiram Kidambi
wiley   +1 more source

Gyrating Schrodinger Geometries and Non-Relativistic Field Theories [PDF]

, 2012
We propose homogeneous metrics of Petrov type III that describe gyrating Schrodinger geometries as duals to some non-relativistic field theories, in which the Schrodinger symmetry is broken further so that the phase space has a linear dependence of the ...
Lu, H., Pope, C. N.
core   +3 more sources

Black holes in five-dimensional gauged supergravity with higher derivatives [PDF]

, 2009
Sera Cremonini, Kentaro Hanaki, James T. Liu, Phillip Szepietowski   +3 more
openalex   +3 more sources

Hidden symmetries from extra dimensions

Journal of High Energy Physics
In Kaluza-Klein compactifications, some symmetries of the higher dimensional theory are preserved in lower dimensions, others are broken, and occasionally, there are symmetry enhancements.
Marco Ciafardini, Diego Marqués, Carmen A. Núñez, Agustina Pereyra Grau   +3 more
doaj   +1 more source