1 citations · 1 across the 6 of their papers we have counts for
7 papers
Infrared Problem in Quantum Electrodynamics
Igor Frolov, Albert Schwarz
It is well known that the inclusive cross section in QED is infrared finite. In the standard diagram techniques this result follows from cancellation of infrared divergences. We su…
Geometric Approach to Quantum Theory. L-functionals
Albert Schwarz
This publication consists of slides from my talk at the Simons Center for Geometry and Physics in 2024. It contains a brief review of the L-functional formalism, along with a discu…
Quantum theory from classical mechanics near equilibrium
Albert Schwarz
We consider classical theories described by Hamiltonians that have a non-degenerate minimum at the point where generalized momenta and generalized coordinates vani…
Adiabatic definitions of scattering matrix and inclusive scattering matrix
Albert Schwarz
The main goal of present paper is to analyze the adiabatic definition of scattering matrix in the formalism of L-functionals. This definition leads to the notion of inclusive scatt…
A new approach to superstring
Albert Schwarz
We show how starting with one-string space of states in BRST formalism one can construct a large class of physical quantities containing, in particular, scattering amplitudes for b…
A new approach to string theory
Albert Schwarz
In the present paper we consider quantum theories obtained by quantization of classical theories with first-class constraints assuming that these constraints form a Lie algebra. We…
Quantum mechanics and quantum field theory. Algebraic and geometric approaches
Igor Frolov, Albert Schwarz
This is a non-standard exposition of the main notions of quantum mechanics and quantum field theory including some recent results. It is based on the algebraic approach where the s…