output
19922026
researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2015 · hep-thShow all

13 papers · 2 filters

hep-th2015★ 16 cited

Emergence and expansion of cosmic space as due to M0-branes

Alireza Sepehri, Mohammad Reza Setare, Salvatore Capozziello

Recently, Padmanabhan [arXiv:1206.4916 [hep-th]] discussed that the difference between the number of degrees of freedom on the boundary surface and the number of degrees of freedom…

hep-th2015★ 66 cited

New soft theorems for the gravity dilaton and the Nambu-Goldstone dilaton at subsubleading order

Paolo Di Vecchia, Raffaele Marotta, Matin Mojaza +1

We study the soft behavior of two seemingly different particles that are both referred to as dilatons in the literature, namely the one that appears in theories of gravity and in s…

hep-th2015★ 29 cited

Soft Theorems from String Theory

Paolo Di Vecchia, Raffaele Marotta, Matin Mojaza

Soft behaviour of closed string amplitudes involving dilatons, gravitons and anti-symmetric tensors, is studied in the framework of bosonic string theory. The leading double soft l…

hep-th2015★ 10 cited

Photons in a Ball

Wolfgang Mück

The electromagnetic field inside a spherical cavity of large radius R is considered in the presence of stationary charge and current densities. R provides infra-red regularization…

hep-th2015★ 1 cited

Green's Functions for Translation Invariant Star Products

Fedele Lizzi, Manolo Rivera, Patrizia Vitale

We calculate the Green functions for a scalar field theory with quartic interactions for which the fields are multiplied with a generic translation invariant star product. Our anal…

hep-th2015★ 195 cited

Dynamics of Perturbations in Double Field Theory & Non-Relativistic String Theory

Sung Moon Ko, Charles Melby-Thompson, Rene Meyer +1

Double Field Theory provides a geometric framework capable of describing string theory backgrounds that cannot be understood purely in terms of Riemannian geometry -- not only glob…

hep-th2015★ 31 cited

Double-soft behavior for scalars and gluons from string theory

Paolo Di Vecchia, Raffaele Marotta, Matin Mojaza

We compute the leading double-soft behavior for gluons and for the scalars obtained by dimensional reduction of a higher dimensional pure gauge theory, from the scattering amplitud…

hep-th2015

Boosted Horizon of a Boosted Space-Time Geometry

Emmanuele Battista, Giampiero Esposito, Paolo Scudellaro +1

We apply the ultrarelativistic boosting procedure to map the metric of Schwarzschild-de Sitter spacetime into a metric describing de Sitter spacetime plus a shock-wave singularity…

hep-th2015★ 15 cited

The Gribov problem in Noncommutative QED

Fabrizio Canfora, Maxim Kurkov, Luigi Rosa +1

It is shown that in the noncommutative version of QED (NCQED) Gribov copies induced by the noncommutativity of space-time appear in the Landau gauge. This is a genuine effect of no…

hep-th2015★ 18 cited

Soft theorem for the graviton, dilaton and the Kalb-Ramond field in the bosonic string

Paolo Di Vecchia, Raffaele Marotta, Matin Mojaza

We study the behavior of the scattering amplitudes of the bosonic string involving a soft massless state (graviton, dilaton and Kalb-Ramond antisymmetric tensor) and closed string…

hep-th2015★ 19 cited

Nonlocal quantum field theory without acausality and nonunitarity at quantum level: is SUSY the key?

Andrea Addazi, Giampiero Esposito

The realization of a nonlocal quantum field theory without losing unitarity, gauge invariance and causality is investigated. It is commonly retained that such a formulation is poss…

hep-th2015★ 6 cited

Noncommutative geometry, Grand Symmetry and twisted spectral triple

Agostino Devastato

In the noncommutative geometry approach to the standard model we discuss the possibility to derive the extra scalar field sv- initially suggested by particle physicist to stabilize…

hep-th2015★ 34 cited

Noncommutative via closed star product

V. G. Kupriyanov, P. Vitale

We consider linear star products on of Lie algebra type. First we derive the closed formula for the polydifferential representation of the corresponding Lie algebra generator…