211 citations · 381 across the 9 of their papers we have counts for
7 papers · 1 filter
Can the cosmological "constant" run? - It may run
Ilya L. Shapiro, Joan Sola
Using standard quantum field theory, we discuss several theoretical aspects of the possible running of the cosmological constant (CC) term in Einstein's equations. The basic motiva…
Quantum Effects in Softly Broken Gauge Theories in Curved Space-Times
I. L. Buchbinder, G. de Berredo-Peixoto, I. L. Shapiro
The soft breaking of gauge or other symmetries is the typical Quantum Field Theory phenomenon. In many cases one can apply the Stckelberg procedure, which means intro…
Some remarks on Gopakumar-Vafa invariants
A. Schwarz, I. Shapiro
We show that Gopakumar-Vafa invariants can be expressed in terms of the cohomology ring of moduli space of D-branes without reference to the sl_2 \times sl_2 action. We also give a…
Vacuum effective action and inflation
J. C. Fabris, A. M. Pelinson, I. L. Shapiro
We consider vacuum quantum effects in the Early Universe, which may lead to inflation. The inflation is a direct consequence of the supposition that, at high energies, all the part…
Torsion: theory and possible observables
Ilya L. Shapiro
We discuss the theoretical basis for the search of the possible experimental manifestations of the torsion field at low energies. First, the quantum field theory in an external gra…
Perturbative approach to the two-dimensional quantum gravity
Ilya L. Shapiro
The main part of this presentation is a review of the previous original works on the perturbative covariant approach to the -dimensional quantum gravity. We discuss the renormal…