Results 41 to 50 of about 171 (111)
Supercurrents and Tunneling in Massive Many‐Vortex Necklaces and Star‐Lattices
Annalen der Physik, Volume 537, Issue 12, December 2025.It is numerically shown how massive many‐vortex systems, in a mixture of Bose–Einstein condensates, can host the bosonic tunneling of the infilling component in an almost‐periodic way when the vortices are organized in necklaces or star‐lattices. The purpose is to explore the conditions for the onset of Josephson supercurrents in rotating many‐vortex ...
Alice Bellettini, Vittorio Penna
wiley +1 more source
Radio Wave Propagation Revisited With Application to High‐Latitude Ionospheric Scintillation
Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.Abstract The subject of radio‐wave propagation in various media, including turbulent plasmas, has for more than a century preoccupied astronomers, space plasma physicists, scientists, and engineers interested in the problem of wave scattering by turbulent media.
A. M. Hamza, K. Meziane
wiley +1 more source
The Representation of Time and Change in Mechanics [PDF]
, 2005 This paper is concerned with the representation of time and change in classical (i.e., non-quantum) physical theories. One of the main goals is to attempt to clarify the nature and scope of the so-called problem of time: a knot of technical and ...
Belot, Gordon
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Maximal symplectic torus actions
Bulletin of the London Mathematical Society, Volume 57, Issue 12, Page 4132-4148, December 2025.Abstract There are several different notions of maximal torus actions on smooth manifolds, in various contexts: symplectic, Riemannian, complex. In the symplectic context, for the so‐called isotropy‐maximal actions, as well as for the weaker notion of almost isotropy‐maximal actions, we give classifications up to equivariant symplectomorphism.
Rei Henigman
wiley +1 more source
Recursive Relations for the S‐matrix of Liouville Theory
Fortschritte der Physik, Volume 73, Issue 11, November 2025.Abstract The relation between the vertex operators of the in and out fields in Liouville theory is analyzed. This is used to derive equations for the S‐matrix, from which a recursive relation for the normal symbol of the S‐matrix for discrete center‐of‐mass momenta is obtained.
George Jorjadze +2 more
wiley +1 more source
Classification and Reduction of Equivariant Star Products on Symplectic Manifolds [PDF]
, 2017 This doctoral thesis provides a classification of equivariant star products (star products together with quantum momentum maps) in terms of equivariant de Rham cohomology. This classification result is then used to construct an analogon of the Kirwan map
Reichert, Thorsten
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Symplectic Reduction in Infinite Dimensions [PDF]
This paper develops a theory of symplectic reduction in the infinite-dimensional setting, covering both the regular and singular case. Extending the classical work of Marsden, Weinstein, Sjamaar and Lerman, we address challenges unique to infinite ...
Rudolph, Gerd, Diez, Tobias
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Geometry and symmetry of quantum and classical-quantum dynamics. [PDF]
, 2017 The symmetry properties of quantum variational principles are considered. Euler-Poincaré reduction theory is applied to the Dirac-Frenkel variational principle for Schrödinger's dynamics producing new variational principles for the different pictures of ...
Bonet-Luz, Esther
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Homotopy reduction of multisymplectic structures in Lagrangian field theory [PDF]
While symplectic geometry is the geometric framework of classical mechanics, the geometry of classical field theories is governed by multisymplectic structures.
Bernardy, J. ; https://orcid.org/
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Bifurcations from relative equilibria of Hamiltonian systems [PDF]
A symplectic version of the slice theorem for compact group actions is used to give a general description of the dynamics of a symmetric Hamiltonian system near a relative equilibrium as an interaction between rotational and vibrational motion.
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