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JournalISSN: 0018-0238

Helvetica Physica Acta 

About: Helvetica Physica Acta is an academic journal. The journal publishes majorly in the area(s): Quantum field theory & Superconductivity. It has an ISSN identifier of 0018-0238. Over the lifetime, 656 publications have been published receiving 17635 citations.


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Journal Article

2,115 citations

Journal ArticleDOI
TL;DR: In this article, a representation of the main characteristics of extragalactic nebulae and of the methods which served their exploration is given, in particular, the so-called redshift of ENE is discussed in detail.
Abstract: This paper gives a representation of the main characteristics of extragalactic nebulae and of the methods which served their exploration. In particular, the so called redshift of extragalactic nebulae is discussed in detail. Different theories which have been worked out in order to explain this important phenomenon will be discussed briefly. Finally it will be indicated to what degree the redshift promises to be important for the study of penetrating radiation.

1,927 citations

Journal Article
Nicolas Gisin1
TL;DR: In this article, the Schroedinger dynamics and the projection postulate are unified and a non deterministic generalization of the Schröter equation compatible with relativity is presented. And a symmetry preserving generalisation of the Ghirardi-Rimini-Weber model is presented for quantum dynamical semigroups, including the damped harmonic oscillator and spin relaxation.
Abstract: Our aim is to unify the Schroedinger dynamics and the projection postulate. We first prove that the Schroedinger evolution is the only quantum evolution that is deterministic and compatible with relativity. Next we present a non deterministic generalization of the Schroedinger equation compatible with relativity. This time continuous pure state valued stochastic process covers the whole class of quantum dynamical semigroups, as exemplified by the damped harmonic oscillator and spin relaxation. Finally a symmetry preserving generalization of the Ghirardi-Rimini-Weber model is presented. (orig.).

513 citations

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Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
20041
20011
199914
199835
19979
199643