Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Bars, Itzhak"'
Autor:
Bars, Itzhak, Singh, Sophia D.
The traditional Chern-Simons (CS) terms in 3+1 dimensions that modify General Relativity (GR), Quantum Chromodynamics (QCD), and Quantum Electrodynamics (QED), typically lack scale invariance. However, a locally scale invariant and geodesically compl
Externí odkaz:
http://arxiv.org/abs/2405.05510
Autor:
Bars, Itzhak, Rosner, Jonathan L.
The relation between motion in $-1/r$ and $r^{2}$ potentials, known since Newton, can be demonstrated by the substitution $r\rightarrow r^{2}$ in the classical/quantum radial equations of the Kepler/Hydrogen problems versus the harmonic oscillator. T
Externí odkaz:
http://arxiv.org/abs/2001.08818
Autor:
Bars, Itzhak
Publikováno v:
Phys. Rev. D 98, 103510 (2018)
In this paper I will first outline an effective field theory for cosmology (EFTC) that is based on the Standard Model coupled to General Relativity and improved with Weyl symmetry. There are no new physical degrees of freedom in this theory, but what
Externí odkaz:
http://arxiv.org/abs/1807.08310
Autor:
Araya, Ignacio J., Bars, Itzhak
Publikováno v:
Phys. Rev. D 97, 085009 (2018)
This is the first of a series of papers in which we use analyticity properties of quantum fields propagating on a spacetime to uncover a new multiverse geometry when the classical geometry has horizons and/or singularities. The nature and origin of t
Externí odkaz:
http://arxiv.org/abs/1712.01326
Autor:
Bars, Itzhak, James, Albin
Publikováno v:
Phys. Rev. D 93, 044029 (2016)
Geodesic incompleteness is a problem in both general relativity and string theory. The Weyl invariant Standard Model coupled to General Relativity (SM+GR), and a similar treatment of string theory, are improved theories that are geodesically complete
Externí odkaz:
http://arxiv.org/abs/1511.05128
We present the geodesical completion of the Schwarzschild black hole in four dimensions which covers the entire space in (u,v) Kruskal-Szekeres coordinates, including the spacetime behind the black and white hole singularities. The gravitational cons
Externí odkaz:
http://arxiv.org/abs/1510.03396
Autor:
Bars, Itzhak, Rychkov, Dmitry
String theory developed by demanding consistency with quantum mechanics. In this paper we wish to reverse the reasoning. We pretend open string field theory is a fully consistent definition of the theory - it is at least a self consistent sector. The
Externí odkaz:
http://arxiv.org/abs/1407.6833
Autor:
Bars, Itzhak, Rychkov, Dmitry
We develop a new background independent Moyal star formalism in bosonic open string field theory. The new star product is formulated in a half-phase-space, and because phase space is independent of any background fields, the interactions are backgrou
Externí odkaz:
http://arxiv.org/abs/1407.4699
The fundamental string length, which is an essential part of string theory, explicitly breaks scale invariance. However, in field theory we demonstrated recently that the gravitational constant, which is directly related to the string length, can be
Externí odkaz:
http://arxiv.org/abs/1407.0992