Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Ruzzi, Giuseppe"'
Given a Haag-Kastler net on a globally hyperbolic spacetime, one can consider a family of regions where quantum charges are supposed to be localized. Assuming that the net fulfils certain minimal properties (factoriality of the global observable alge
Externí odkaz:
http://arxiv.org/abs/2306.08449
Within the framework of the universal algebra of the electromagnetic field, the impact of globally neutral configurations of external charges on the field is analyzed. External charges are not affected by the field, but they induce localized automorp
Externí odkaz:
http://arxiv.org/abs/2212.11009
The universal algebra of the electromagnetic field III. Static charges and emergence of gauge fields
A universal C*-algebra of gauge invariant operators is presented, describing the electromagnetic field as well as operations creating pairs of static electric charges having opposite signs. Making use of Gauss' law, it is shown that the string-locali
Externí odkaz:
http://arxiv.org/abs/2111.01538
Given any half-sided modular inclusion of standard subspaces, we show that the entropy function associated with the decreasing one-parameter family of translated standard subspaces is convex for any given (not necessarily smooth) vector in the underl
Externí odkaz:
http://arxiv.org/abs/2107.06787
We show that the Aharonov-Bohm effect finds a natural description in the setting of QFT on curved spacetimes in terms of superselection sectors of local observables. The extension of the analysis of superselection sectors from Minkowski spacetime to
Externí odkaz:
http://arxiv.org/abs/1912.05297
We provide the notion of entropy for a classical Klein-Gordon real wave, that we derive as particular case of a notion entropy for a vector in a Hilbert space with respect to a real linear subspace. We then consider a localised automorphism on the Ri
Externí odkaz:
http://arxiv.org/abs/1906.01707
A recent idea, put forward by Mund, Rehren and Schroer, is discussed; it suggests that in gauge quantum field theory one can replace the point-localized gauge fields by string-localized vector potentials built from gauge invariant observables and a p
Externí odkaz:
http://arxiv.org/abs/1904.10055
Linking numbers appear in local quantum field theory in the presence of tensor fields, which are closed two-forms on Minkowski space. Given any pair of such fields, it is shown that the commutator of the corresponding intrinsic (gauge invariant) vect
Externí odkaz:
http://arxiv.org/abs/1808.10167
Publikováno v:
In Journal of Geometry and Physics February 2022 172
Conditions for the appearance of topological charges are studied in the framework of the universal C*-algebra of the electromagnetic field, which is represented in any theory describing electromagnetism. It is shown that non-trivial topological charg
Externí odkaz:
http://arxiv.org/abs/1610.03302