Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Gerdt, V. P."'
A hadronic vacuum polarization correction to the photon propagator is found by using the Dubnicka-Meshcheryakov parameterization of the pion electromagnetic form factor and new experimental data on the $e^+e^-$ hadrons annihilation cross section. The
Externí odkaz:
http://arxiv.org/abs/2112.14116
Autor:
Bradford, R., Davenport, J. H., England, M., Errami, H., Gerdt, V., Grigoriev, D., Hoyt, C., Kosta, M., Radulescu, O., Sturm, T., Weber, A.
Publikováno v:
Journal of Symbolic Computation, volume 98, pp. 84 - 119, Elsevier 2020
We consider a problem from biological network analysis of determining regions in a parameter space over which there are multiple steady states for positive real values of variables and parameters. We describe multiple approaches to address the proble
Externí odkaz:
http://arxiv.org/abs/1902.04882
Entangling properties of a mixed 2-qubit system can be described by the local homogeneous unitary invariant polynomials in elements of the density matrix. The structure of the corresponding invariant polynomial ring for the special subclass of states
Externí odkaz:
http://arxiv.org/abs/1603.03262
Publikováno v:
LNCS 8136, Springer-Verlag, 2013, pp.46-60
In the given paper, we confront three finite difference approximations to the Navier--Stokes equations for the two-dimensional viscous incomressible fluid flows. Two of these approximations were generated by the computer algebra assisted method propo
Externí odkaz:
http://arxiv.org/abs/1307.0914
The fate of entanglement of spins for two heavy constituents of a bound state moving in a strong laser field is analyzed within the semiclassical approach. The bound state motion as a whole is considered classically beyond the dipole approximation an
Externí odkaz:
http://arxiv.org/abs/1306.2074
Autor:
Gusev, A. A., Chuluunbaatar, O., Gerdt, V. P., Markovski, B. L., Serov, V. V., Vinitsky, S. I.
The adiabatic approximation is well-known method for effective study of few-body systems in molecular, atomic and nuclear physics, using the idea of separation of "fast" and "slow" variables. The generalization of the standard adiabatic ansatz for th
Externí odkaz:
http://arxiv.org/abs/1005.2089
Autor:
Gusev, A. A., Chuluunbaatar, O., Gerdt, V. P., Rostovtsev, V. A., Vinitsky, S. I., Derbov, V. L., Serov, V. V.
A computation scheme for solving elliptic boundary value problems with axially symmetric confining potentials using different sets of one-parameter basis functions is presented. The efficiency of the proposed symbolic-numerical algorithms implemented
Externí odkaz:
http://arxiv.org/abs/1004.4202
Publikováno v:
Global Integrability of Field Theories / Proceedings of GIFT 2006. J.Calmet, W.M.Seiler, R.W.Tucker (Eds.), Cocroft Institute, Daresbury (UK), 2006, pp. 135-154
Central issues of the Dirac constraint formalism are discussed in relation to the algorithmic methods of commutative algebra based on the Groebner basis techniques. For a wide class of finite dimensional polynomial degenerate Lagrangian systems, we d
Externí odkaz:
http://arxiv.org/abs/math-ph/0611021
Autor:
Gerdt, V. P.
In this paper we consider systems of partial (multidimensional) linear difference equations. Specifically, such systems arise in scientific computing under discretization of linear partial differential equations and in computational high energy physi
Externí odkaz:
http://arxiv.org/abs/cs/0611041
Publikováno v:
J.Math.Phys.47:112902,2006
The reduced Hamiltonian system on T*SU(3)/SU(2)) is derived from a Riemannian geodesic motion on the SU(3) group manifold parameterised by the generalised Euler angles and endowed with a bi-invariant metric. Our calculations show that the metric defi
Externí odkaz:
http://arxiv.org/abs/hep-th/0511245