Results 91 to 100 of about 1,574,877 (220)

The general invariance of physical laws

, 2017
Physical laws are a set of rules in the relationship between observations made by the experimenter. All these observations are made through a mechanism that links the external world to the experimenter's awareness, a mechanism which is not under the experimenter's control.
openaire   +2 more sources

Chiral fluids: a few theoretical issues

EPJ Web of Conferences, 2018
We review briefly a few topic concerning physics of fluids whose constituents are massless fermions interacting in chiral invariant way. Macroscopic manifestations of the chral anomaly is one of central issues.
Zakharov V. I., Teryaev O. V.
doaj   +1 more source

Scaling Symmetries and Conservation Laws for Variable-coefficients Nonlinear Dispersive Equations

Trends in Computational and Applied Mathematics, 2019
Scaling symmetries arise in different branches of physics, and symmetry-based approaches are powerful tools for studying scaling-invariant models since they can provide conservation laws that are not obvious by inspection.
Érica M. Silva, Wescley L. Souza
doaj   +1 more source

Construction of 2nd stage shape invariant potentials [PDF]

arXiv, 2017
We introduce concept of next generation shape invariance and show that the process of shape invariant extension can be continued indefinitely.
arxiv  

Hierarchies of new invariants and conserved integrals in inviscid fluid flow [PDF]

Phys. Fluids 32 (2020), 086104, 2018
A vector calculus approach for the determination of advected invariants is presented for inviscid fluid flow. This approach describes invariants by means of Lie dragging of scalars, vectors, and skew-tensors with respect to the fluid velocity, which has the physical meaning of characterizing tensorial quantities that are frozen into the flow.
arxiv  

Conformally invariant bending energy for hypersurfaces [PDF]

, 2005
The most general conformally invariant bending energy of a closed four-dimensional surface, polynomial in the extrinsic curvature and its derivatives, is constructed. This invariance manifests itself as a set of constraints on the corresponding stress tensor.
arxiv   +1 more source

Matrix Product States: Symmetries and Two-Body Hamiltonians

, 2009
We characterize the conditions under which a translationally invariant matrix product state (MPS) is invariant under local transformations. This allows us to relate the symmetry group of a given state to the symmetry group of a simple tensor.
D. Perez-Garcia, D. Pérez-García, J. I. Cirac, M. M. Wolf, M. Sanz, O. Bratteli   +5 more
core   +1 more source

Possible Supersymmetric Effects on Angular Distributions in $B \to K^* (\to K \pi) \ell^+ \ell^- $ Decays

, 2001
We investigate the angular distributions of the rare B decay, $B \to K^* (\to K \pi) \ell^+ \ell^-$, in general supersymmetric extensions of the standard model.
A. Ali, A. Ali, A.J. Buras, C. S. Kim, C.-D. Lü, C.Q. Geng, C.S. Kim, C.S. Kim, C.S. Lim, Cai-Dian Lü, D. Atwood, D. Melikhov, D. Melikhov, D. Melikhov, F. Gabbiani, G. Buchalla, G. Kramer, G. Kramer, L.J. Hall, N. Isgur, N. Paver, N.G. Deshpande, P.J. O’Donnell, Q.S. Yan, S. Fukae, S. Fukae, S. Fukae, T.E. Coan, Y. Grossman, Y.G. Kim, Yeong Gyun Kim   +30 more
core   +1 more source

A Novel Orbit Parameterization in Spherical Coordinates

The Planetary Science Journal
We present a novel orbit parameterization in spherical coordinates. This parameterization enables the mixing of varying and invariant orbital parameters, and clarifies the physics of the orbit.
Kevin J. Napier, Matthew J. Holman
doaj   +1 more source

Pohlmeyer invariants are expressible in terms of DDF invariants [PDF]

arXiv, 2004
It is shown that the Pohlmeyer invariants of the classical bosonic string are a proper subset of the classical DDF invariants. This makes the quantization of the Pohlmeyer invariants particularly transparent and allows to generalize them to the superstring.
arxiv