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64 papers · 1 filter
Vacuum energy in effective field theory of general relativity
E. Epelbaum, J. Gegelia, Ulf-G. Meißner
It is shown to all orders of perturbation theory that in the effective field theory of general relativity the condition of vanishing of the vacuum energy leads to the same value of…
Unification of elementary forces in gauge SL(2N,C) theories
J. L. Chkareuli
We argue that the gauge theories may point to a possible way where the known elementary forces, including gravity, could be consistently unified. Remarkably, while all r…
Alpha-alpha scattering in the Multiverse
Serdar Elhatisari, Timo A. Lähde, Dean Lee +2
We investigate the phase shifts of low-energy alpha-alpha scattering under variations of the fundamental parameters of the Standard Model, namely the light quark mass, the electrom…
Scalar lumps with a horizon
George Lavrelashvili, Jean-Luc Lehners, Marc Schneider
We study a self-interacting scalar field theory coupled to gravity and are interested in spherically symmetric solutions with a regular origin surrounded by a horizon. For a scalar…
Covariant tetraquark equations in quantum field theory
A. N. Kvinikhidze, B. Blankleider
We derive general covariant coupled equations of QCD describing the tetraquark in terms of a mix of four-quark states , and two-quark states . The coupling of $…
On the S-matrix of Liouville theory
George Jorjadze, Stefan Theisen
The S-matrix for each chiral sector of Liouville theory on a cylinder is computed from the loop expansion of correlation functions of a one-dimensional field theory on a circle wit…