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17 papers · 1 filter
Reheating and causal thermodynamics
Winfried Zimdahl, Diego Pavón, Roy Maartens
The reheating process in inflationary universe models is considered as an out-of-equilibrium mixture of two interacting and reacting fluids, and studied within the framework of cau…
Two routes to metallic behavior for a Kondo insulator
A. Schroeder, G. Aeppli, T. E. Mason +3
Cold neutron spectroscopy was performed on CeNi_{1-x}Cu_xSn to investigate how the magnetic gap in the 'Kondo insulator' CeNiSn is destroyed by temperature (T), chemical substituti…
Vertex functions and generalized normal-ordering by triple systems in non-linear spinor field models
Bertfried Fauser
Triple systems are closely related to Yang-Baxter symmetries. Utilizing a non-parameter-dependent triple product, we derive the BCS interaction. The enlargement of the notion of sy…
Solution of the Higgs scalar-tensor theory without Higgs particles for static stars
Oleg von Styp Rekowski, Hartmut Frommert
Within the scalar-tensor theory of gravity with Higgs mechanism without Higgs particles, we prove that the excited Higgs potential (the scalar field) vanishs inside and outside of…
On the coupling of massless particles to scalar fields
Hartmut Frommert
It is investigated if massless particles can couple to scalar fields in a special relativistic theory with classical particles. The only possible obvious theory which is invariant…
Collisional equilibrium, particle production and the inflationary universe
Winfried Zimdahl, Josep Triginer, Diego Pavon
Particle production processes in the expanding universe are described within a simple kinetic model. The equilibrium conditions for a Maxwell-Boltzmann gas with variable particle n…