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We review the geodesic motion of pseudo-classical spinning particles in curved spaces. Investigating the generalized Killing equations for spinning spaces, we express the constants of motion in terms of Killing-Yano tensors. The general…

高能物理 - 理论 · 物理学 2015-06-26 Diana Vaman , Mihai Visinescu

The gravitational anomalies are investigated for generalized Euclidean Taub-NUT metrics which admit hidden symmetries analogous to the Runge-Lenz vector of the Kepler-type problem. In order to evaluate the axial anomalies, the index of the…

数学物理 · 物理学 2016-08-16 Ion I. Cotăescu , Sergiu Moroianu , Mihai Visinescu

The geodesic motion of pseudo-classical spinning particles in Euclidean Taub-NUT space is analysed. The constants of motion are expressed in terms of Killing-Yano tensors. Some previous results from the literature are corrected.

高能物理 - 理论 · 物理学 2009-10-30 Diana Vaman , Mihai Visinescu

The geodesic motion of pseudo-classical spinning particles in the Euclidean Taub-NUT space is analysed. The generalized Killing equations for spinning space are investigated and the constants of motion are derived in terms of the solutions…

高能物理 - 理论 · 物理学 2010-04-06 Mihai Visinescu

Higher order symmetries corresponding to Killing tensors are investigated. The intimate relation between Killing-Yano tensors and non-standard supersymmetries is pointed out. In the Dirac theory on curved spaces, Killing-Yano tensors…

数学物理 · 物理学 2010-12-06 Stere Ianus , Mihai Visinescu , Gabriel-Eduard Vilcu

Spinning particles in curved space-time can have fermionic symmetries generated by the square root of bosonic constants of motion other than the Hamiltonian. We present a general analysis of the conditions under which such new…

高能物理 - 理论 · 物理学 2009-10-07 G. W. Gibbons , R. H. Rietdijk , J. W. van Holten

The existence of Killing-Yano tensors on space-times can be probed by spinning particles. Specifically, Dirac particles possess new fermionic constants of motion corresponding to non-standard supersymmetries on the particle worldline. A…

广义相对论与量子宇宙学 · 物理学 2011-04-15 J. W. van Holten

The generalized Killing equations for the configuration space of spinning particles (spinning space) are analysed. Simple solutions of the homogeneous part of these equations are expressed in terms of Killing-Yano tensors. The general…

高能物理 - 理论 · 物理学 2009-10-30 Diana Vaman , Mihai Visinescu

Fermions in D=4 self-dual Euclidean Taub-NUT space are investigated. Dirac-type operators involving Killing-Yano tensors of the Taub-NUT geometry are explicitly given showing that they anticommute with the standard Dirac operator and…

高能物理 - 理论 · 物理学 2009-11-07 Ion I. Cotăescu , Mihai Visinescu

It is shown that the main geometrical objects involved in all the symmetries or supersymmetries of the Dirac operators in curved manifolds of arbitrary dimensions are the Killing vectors and the Killing-Yano tensors of any ranks. The…

高能物理 - 理论 · 物理学 2008-02-25 I. I. Cotaescu , M. Visinescu

In spacetimes admitting Yano tensors the classical theory of the spinning particle possesses enhanced worldline supersymmetry. Quantum mechanically generators of extra supersymmetries correspond to operators that in the classical limit…

高能物理 - 理论 · 物理学 2014-11-18 Marco Cariglia

The generalized Killing equations for the configuration space of spinning particles (spinning space) are analysed. Solutions of these equations are expressed in terms of Killing-Yano tensors. In general the constants of motion can be seen…

高能物理 - 理论 · 物理学 2009-10-30 Mihai Visinescu

We explore the symmetries of classical stationary spacetimes in terms of the dynamics of a spinning string described by a worldsheet supersymmetric action. We show that for stationary configurations of the string, the action reduces to that…

高能物理 - 理论 · 物理学 2014-11-18 Haji Ahmedov , Alikram N. Aliev

By using anholonomic frames in (pseudo) Riemannian spaces we define anisotropic extensions of Euclidean Taub-NUT spaces. With respect to coordinate frames such spaces are described by off-diagonal metrics which could be diagonalized by…

高能物理 - 理论 · 物理学 2009-11-07 Sergiu I. Vacaru , Ovidiu Tintareanu-Mircea

These are introductory notes on the study of the Dirac equation in curved spacetime and its relation to hidden symmetries of the dynamics. We present general results on the relation between special spacetime tensors and hidden symmetries,…

广义相对论与量子宇宙学 · 物理学 2012-10-01 Marco Cariglia

In these lectures the relations between symmetries, Lie algebras, Killing vectors and Noether's theorem are reviewed. A generalisation of the basic ideas to include velocity-dependend co-ordinate transformations naturally leads to the…

高能物理 - 理论 · 物理学 2011-04-15 J. W. van Holten , R. H. Rietdijk

The generalized Killing equations and the symmetries of Taub-NUT spinning space are investigated. For spinless particles the Runge-Lenz vector defines a constant of motion directly, whereas for spinning particles it now requires a…

高能物理 - 理论 · 物理学 2011-07-19 Mihai Visinescu

We investigate the hidden symmetries of the Kerr-Newman, of the D=5 minimal gauged supergravity which admits a Killing-Maxwell system in the sense of Carter and of higher dimensional spacetimes in the presence of Killing-Yano torsion. We…

广义相对论与量子宇宙学 · 物理学 2014-08-18 C. Rugina

We give an overview of the first integrals of motion of particles in the presence of external gauge fields in a covariant Hamiltonian approach. The special role of St\"ackel-Killing and Killing-Yano tensors is pointed out. Some nontrivial…

高能物理 - 理论 · 物理学 2011-04-07 Mihai Visinescu

We revisit the conserved quantities of the Mathisson-Papapetrou-Tulczyjew equations describing the motion of spinning particles on a fixed background. Assuming Ricci-flatness and the existence of a Killing-Yano tensor, we demonstrate that…

广义相对论与量子宇宙学 · 物理学 2022-01-12 Geoffrey Compère , Adrien Druart
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