Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Naseer, Usman"'
Publikováno v:
SciPost Phys. 14, 028 (2023)
We consider the partition function for Euclidean $SU(N)$ super Yang-Mills on a squashed seven-sphere. We show that the localization locus of the partition function has instanton membrane solutions wrapping the six "fixed" three-spheres on the $\mathb
Externí odkaz:
http://arxiv.org/abs/2208.01115
Autor:
Naseer, Usman, Thull, Charles
Publikováno v:
SciPost Phys. 13, 058 (2022)
We study $\mathcal{N}=2$ theories on four-dimensional manifolds that admit a Killing vector $v$ with isolated fixed points. It is possible to deform these theories by coupling position-dependent background fields to the flavor current multiplet. The
Externí odkaz:
http://arxiv.org/abs/2110.09329
Publikováno v:
SciPost Phys. 12, 025 (2022)
We consider mass-deformed theories with ${\cal N}\geq2$ supersymmetry on round and squashed three-spheres. By embedding the supersymmetric backgrounds in extended supergravity we show that at special values of mass deformations the supersymmetry is e
Externí odkaz:
http://arxiv.org/abs/2107.07151
Publikováno v:
SciPost Phys. 10, 063 (2021)
We study the free energy of four-dimensional CFTs on deformed spheres. For generic nonsupersymmetric CFTs only the coefficient of the logarithmic divergence in the free energy is physical, which is an extremum for the round sphere. We then specialize
Externí odkaz:
http://arxiv.org/abs/2012.01781
Autor:
Naseer, Usman
In local quantum field theory, the entanglement entropy of a region is divergent due to the arbitrary short-wavelength correlations near the boundary of the region. Quantum gravitational fluctuations are expected to cut off the entropy of the ultravi
Externí odkaz:
http://arxiv.org/abs/2002.12148
Autor:
Naseer, Usman
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 145-149).
This thesis explores aspects of gravity and quantum field th
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 145-149).
This thesis explores aspects of gravity and quantum field th
Externí odkaz:
http://hdl.handle.net/1721.1/119109
Autor:
Naseer, Usman, Zwiebach, Barton
We apply recently developed convex programs to find the minimal-area Riemannian metric on $2n$-sided polygons ($n\geq 3$) with length conditions on curves joining opposite sides. We argue that the Riemannian extremal metric coincides with the conform
Externí odkaz:
http://arxiv.org/abs/1903.11755
Autor:
Oweis, Jozef, Leamon, Annie, Al-Tarbsheh, Ali H., Goodspeed, Katharine, Khorolsky, Ciril, Feustel, Paul, Naseer, Usman, Albaba, Isam, Parimi, Sai Anoosh, Shkolnik, Boris, Tiwari, Anupama, Chopra, Amit, Torosoff, Mikhail
Publikováno v:
In Heart & Lung January-February 2023 57:19-24
Akademický článek
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Autor:
Minahan, Joseph A., Naseer, Usman
We construct a class of theories with 16 supersymmetries on spheres of dimension nine and less. The gauge coupling and mass terms for the scalar fields depend on the polar angle away from the north pole. Assuming finite coupling on the north pole, th
Externí odkaz:
http://arxiv.org/abs/1811.11652