Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Mattias N. R. Wohlfarth"'
Autor:
Mattias N. R. Wohlfarth
Publikováno v:
Physical Review
Using tangent bundle geometry we construct an equivalent reformulation of classical field theory on flat spacetimes which simultaneously encodes the perspectives of multiple observers. Its generalization to curved spacetimes realizes a new type of no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28d52c3c9e55170c848670e147e4c2c5
http://arxiv.org/abs/1804.01085
http://arxiv.org/abs/1804.01085
Publikováno v:
Physics Letters B. 712:284-288
As a prototypical massive field theory we study the scalar field on the recently introduced Finsler spacetimes. We show that particle excitations exist that propagate faster than the speed of light recognized as the boundary velocity of observers. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca2d6c9b295a4d8b9ae121fac347a1f0
https://doi.org/10.1016/j.physletb.2012.05.001
https://doi.org/10.1016/j.physletb.2012.05.001
Publikováno v:
Annals of Physics
Area metric manifolds emerge as a refinement of symplectic and metric geometry in four dimensions, where in numerous situations of physical interest they feature as effective matter backgrounds. In this article, this prompts us to identify those area
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10ab370b1ba9a2fdc0c3cffc7ee27f05
https://doi.org/10.1016/j.aop.2010.04.008
https://doi.org/10.1016/j.aop.2010.04.008
Publikováno v:
Physics Letters B
We reveal the non-metric geometry underlying omega-->0 Brans-Dicke theory by unifying the metric and scalar field into a single geometric structure. Taking this structure seriously as the geometry to which matter universally couples, we show that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fee1c06c052235524f347ef1ac1090b4
https://doi.org/10.1016/j.physletb.2008.10.046
https://doi.org/10.1016/j.physletb.2008.10.046
Publikováno v:
Nuclear Physics B. 698:319-334
A general geometrical scheme is presented for the construction of novel classical gravity theories whose solutions obey two-sided bounds on the sectional curvatures along certain subvarieties of the Grassmannian of two-planes. The motivation to study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ac3cabe8133b95b6c7c78c52d45ffc4
https://doi.org/10.1016/j.nuclphysb.2004.07.040
https://doi.org/10.1016/j.nuclphysb.2004.07.040
Publikováno v:
The Journal of Chemical Physics. 116:8723-8730
The widely used equivalent core model (ECM) describes core hole states in systems with atomic charge Z by considering corresponding states with fully occupied core in systems with increased charge Z+1. When calculating energies of Z-core hole states,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b87dfa2797221280f4dc4cf7dc800b4f
https://doi.org/10.1063/1.1473804
https://doi.org/10.1063/1.1473804
Publikováno v:
Springer Proceedings in Physics ISBN: 9783319067605
We consider the geometry of spacetime based on a non-metric, Finslerian, length measure, which, in terms of physics, represents a generalized clock. Our definition of Finsler spacetimes ensure a well defined notion of causality, a precise description
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67a73fbbf9af8565d115187cbd608442
https://doi.org/10.1007/978-3-319-06761-2_42
https://doi.org/10.1007/978-3-319-06761-2_42
Publikováno v:
Physical Review D
Only a severely restricted class of tensor fields can provide classical spacetime geometries, namely those that can carry matter field equations that are predictive, interpretable and quantizable. These three conditions on matter translate into three
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c61fce10b092edd9e3b047f45ac03bb
https://doi.org/10.1103/physrevd.85.104042
https://doi.org/10.1103/physrevd.85.104042
Publikováno v:
Physical Review D. 85
We construct gravitational dynamics for Finsler spacetimes in terms of an action integral on the unit tangent bundle. These spacetimes are generalizations of Lorentzian metric manifolds which satisfy necessary causality properties. A coupling procedu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ff18a36863741660ea4af18c20c65be
https://doi.org/10.1103/physrevd.85.064009
https://doi.org/10.1103/physrevd.85.064009
We give a precise theoretical description of initially aligned sets of orthogonal gyroscopes which are transported along different paths from some initial point to the same final point in spacetime. These gyroscope systems can be used to synchronize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::285ab14669711781dbadc9b7de8f8cd3