64 citations · 479 across the 47 of their papers we have counts for
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Scalar models of formally interacting non-standard quantum fields in Minkowski space-time
Andreas Aste
For decades, a lot of work has been devoted to the problem of constructing a non-trivial quantum field theory in four-dimensional space time. This letter addresses the attempts to…
Weyl, Majorana and Dirac fields from a unified perspective
Andreas Aste
A self-contained derivation of the formalism describing Weyl, Majorana and Dirac fields from a unified perspective is given based on a concise description of the representation the…
Localization properties and causality aspects of massless and massive scalar particles
Andreas Aste, Maik Frensel
Localization properties of scalar single particle states are analyzed by explicit calculational examples with a focus on the massless case. Problems arising from the non-existence…
The finite infinite range Heisenberg model and microcanonical black hole statistics
Andreas Aste
The Gelfand pattern of the reduction of the N-fold tensor product of the fundamental representation of the special unitary group SU(2) by itself is studied in the framework of a fi…
Aspects of the derivative coupling model in four dimensions
Andreas Aste
A concise discussion of a 3+1-dimensional derivative coupling model, in which a massive Dirac field couples to the four-gradient of a massless scalar field, is given in order to el…
Regularization in quantum field theory from the causal point of view
Andreas Aste, Cyrill von Arx, Gunter Scharf
The causal approach to perturbative quantum field theory is presented in detail, which goes back to a seminal work by Henri Epstein and Vladimir Jurko Glaser in 1973. Causal pertur…