Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Tomboulis, E. T."'
Autor:
Lindwasser, Lukas W., Tomboulis, E. T.
Publikováno v:
Phys. Rev. D. 106 (2022) 084026
Recently it has been explicitly shown how a theory with global $GL(d,\mathbb{R})$ coordinate (affine) invariance which is spontaneously broken down to its Lorentz subgroup will have as its Goldstone fields enough degrees of freedom to create a metric
Externí odkaz:
http://arxiv.org/abs/2207.01067
Autor:
Tomboulis, E. T.
The possibility of flat metric solutions in the presence of arbitrary, in particular, Planck mass sized cosmological constants is investigated within multigravity theory, the ghost-free theory of $(N+1)$ rank-2 tensor fields comprising one massless a
Externí odkaz:
http://arxiv.org/abs/2110.15516
Autor:
Tomboulis, E. T.
Publikováno v:
JHEP06 (2021) 077
A large body of work over several decades indicates that, in the presence of gravitational interactions, there is loss of localization resolution within a fundamental ( $\sim$ Planck) length scale $\ell$. We develop a general formalism based on wavel
Externí odkaz:
http://arxiv.org/abs/2104.04098
Autor:
Chin, Paokuan, Tomboulis, E. T.
Publikováno v:
JHEP06 (2018) 014
We study the analyticity properties of amplitudes in theories with nonlocal vertices of the type occurring in string field theory and a wide class of nonlocal field theory models. Such vertices are given in momentum space by entire functions of rapid
Externí odkaz:
http://arxiv.org/abs/1803.08899
Autor:
Tomboulis, E. T.
Publikováno v:
JHEP 09 (2017) 145
The so-called $\Gamma\Gamma$-form of the gravitational Lagrangian, long known to provide its most compact expression as well as the most efficient generation of the graviton vertices, is taken as the starting point for discussing General Relativity a
Externí odkaz:
http://arxiv.org/abs/1708.03977
Autor:
Tomboulis, E. T.
Publikováno v:
JHEP05(2017)148
The tree-loop duality relation is used as a starting point to derive the constraints of causality and unitarity. Specifically, the Bogoliubov causality condition is ab initio derived at the individual graph level. It leads to a representation of a gr
Externí odkaz:
http://arxiv.org/abs/1701.07052
Autor:
Tomboulis, E. T.
$SU(N_c)$ lattice gauge theories with $N_f$ flavors of massless staggered fermions are considered at high quark chemical potential $\mu$ and any temperature $T$. In the strong coupling regime (sufficiently small $\beta$) they have been shown to posse
Externí odkaz:
http://arxiv.org/abs/1511.03733
Autor:
Tomboulis, E. T.
Publikováno v:
Phys. Rev. D 92, 125037 (2015)
We investigate nonlocal field theories, a subject that has attracted some renewed interest in connection with nonlocal gravity models. We study, in particular, scalar theories of interacting delocalized fields, the delocalization being specified by n
Externí odkaz:
http://arxiv.org/abs/1507.00981
Autor:
Tomboulis, E. T.
Publikováno v:
Int. J. Mod. Phys. A, 29, (2014) 1445004
We study $SU(N_c)$ lattice gauge theories with $N_f$ flavors of massless staggered fermions in the presence of quark chemical potential $\mu$. A recent exact result that in the strong coupling limit (vanishing inverse gauge coupling $\beta$) and for
Externí odkaz:
http://arxiv.org/abs/1403.0664
Autor:
Tomboulis, E. T.
The existence of non-trivial IR and UV fixed points in gauge theories as a function of the number of fermion flavors and bare coupling is discussed in the light of recent work. It is pointed out that in fact only a small subset of potential IR-confor
Externí odkaz:
http://arxiv.org/abs/1401.4627