Results 21 to 30 of about 34,234 (192)

Chiral anomalous dispersion

Journal of High Energy Physics, 2018
The linearized Einstein equation describing graviton propagation through a chiral medium appears to be helicity dependent. We analyze features of the corresponding spectrum in a collision-less regime above a flat background. In the long wave-length limit,
Andrey Sadofyev, Srimoyee Sen
doaj   +1 more source

Graviton scattering and a sum rule for the c anomaly in 4D CFT

Journal of High Energy Physics, 2018
4D CFTs have a scale anomaly characterized by the coefficient c, which appears as the coefficient of logarithmic terms in momentum space correlation functions of the energy-momentum tensor.
Marc Gillioz, Xiaochuan Lu, Markus A. Luty   +2 more
doaj   +1 more source

*-Wars Episode I: The Phantom Anomaly [PDF]

, 2001
As pointed out, chiral non-commutative theories exist, and examples can be constructed via string theory. Gauge anomalies require the matter content of individual gauge group factors, including U(1) factors, to be non-chiral.
Ardalan, Ardalan, Blum, Blum, Blum, Bonora, Callan, Douglas, Douglas, Garousi, Gomis, Gracia-Bondia, Green, Green, Ibanez, Jason Kumar, Ken Intriligator, Lawrence, Leigh, Liu, Liu, Liu, Liu, Liu, Martin, Minwalla, Mukhi, Okawa, Rajaraman, Seiberg, Van Raamsdonk, Witten   +31 more
core   +2 more sources

Non-Abelian anomalous (super)fluids in thermal equilibrium from differential geometry

Journal of High Energy Physics, 2018
We apply differential geometry methods to the computation of the anomaly-induced hydrodynamic equilibrium partition function. Implementing the imaginary-time prescription on the Chern-Simons effective action on a stationary background, we obtain general ...
Juan L. Mañes, Eugenio Megías, Manuel Valle, Miguel Á. Vázquez-Mozo   +3 more
doaj   +1 more source

’t Hooft anomalies and boundaries

Journal of High Energy Physics, 2018
We argue that there is an obstruction to placing theories with ’t Hooft anomalies on manifolds with a boundary, unless the symmetry associated with the anomaly can be represented as a non-invariance under an Abelian transformation.
Kristan Jensen, Evgeny Shaverin, Amos Yarom   +2 more
doaj   +1 more source

6D anomaly-free matter spectrum in F-theory on singular spaces

Journal of High Energy Physics, 2022
In this paper we study the 6d localized charged matter spectrum of F-theory directly on a singular elliptic Calabi-Yau 3-fold, i.e. without smoothing via resolution or deformation of the entire fibration.
Antonella Grassi, James Halverson, Cody Long, Julius L. Shaneson, Benjamin Sung, Jiahua Tian   +5 more
doaj   +1 more source

Target-Space Duality in Heterotic and Type I Effective Lagrangians [PDF]

, 1999
We study the implications of target-space duality symmetries for low-energy effective actions of various four-dimensional string theories. In the heterotic case such symmetries can be incorporated in simple orbifold examples.
Aldazabal, Angelantonj, Antoniadis, Antoniadis, Antoniadis, Banks, Cardoso, Cardoso, Cvetic, Dai, Derendinger, Derendinger, Derendinger, Dine, Dixon, Dudas, Ellis, Ellis, Ellis, Ferrara, Ferrara, Gimon, Green, Hans Peter Nilles, Horava, Horava, Ibanez, Ibanez, Ibanez, Ibanez, Ibanez, Ibanez, Itoyama, Kakushadze, Kakushadze, Kakushadze, Kakushadze, Kaplunovsky, Klein, Lalak, Lalak, Lalak, Lalak, Lauer, Leigh, Li, Lukas, Lukas, Lukas, Lykken, Meissner, Mirabelli, Nilles, Nilles, Nilles, Polchinski, Poppitz, Sagnotti, Sagnotti, Scrucca, Stieberger, Stéphane Lavignac, Witten, Witten, Zygmunt Lalak   +64 more
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Boundary conformal anomalies on hyperbolic spaces and Euclidean balls

Journal of High Energy Physics, 2017
We compute conformal anomalies for conformal field theories with free conformal scalars and massless spin 1/2 fields in hyperbolic space ℍ d and in the ball Bd $$ {\mathbb{B}}^d $$, for 2≤d≤7. These spaces are related by a conformal transformation.
Diego Rodriguez-Gomez, Jorge G. Russo
doaj   +1 more source

Geometric general solution to the U(1) anomaly equations

Journal of High Energy Physics, 2020
Costa et al. [Phys. Rev. Lett. 123 (2019) 151601] recently gave a general solution to the anomaly equations for n charges in a U(1) gauge theory. ‘Primitive’ solutions of chiral fermion charges were parameterised and it was shown how operations performed
B C. Allanach, Ben Gripaios, Joseph Tooby-Smith   +2 more
doaj   +1 more source

Anomalies for Galilean fields

, 2018
We initiate a systematic study of `t Hooft anomalies in Galilean field theories, focusing on two questions therein. In the first, we consider the non-relativistic theories obtained from a discrete light-cone quantization (DLCQ) of a relativistic theory ...
Jensen, Kristan
core   +2 more sources