713 citations
- Institute for Nuclear Research and Nuclear EnergyBG100 papers
- Georgi Nadjakov Institute of Solid State PhysicsBG32 papers
- Institute of Mathematics and InformaticsBG32 papers
- Sofia University "St. Kliment Ohridski"BG25 papers
- Centre National de la Recherche ScientifiqueFR14 papers
- University of Tennessee at KnoxvilleUS12 papers
- Max Planck Institute for Polymer ResearchDE11 papers
- Oak Ridge National LaboratoryUS11 papers
- University of WarsawPL11 papers
- Joint Institute for Nuclear ResearchRU8 papers
- Universidad Complutense de MadridES8 papers
- Instituto de Estructura de la MateriaES7 papers
6 papers · 1 filter
On certain organic compounds with one mono-substitution and at least three di-substitution homogeneous derivatives
Valentin Vankov Iliev
In this paper parent substances with molecules which can be divided into a skeleton and six univalent substituents, and that have the properties mentioned in the title, are conside…
DMRG Study of Critical Behavior of the Spin-1/2 Alternating Heisenberg Chain
T. Papenbrock, T. Barnes, D. J. Dean +2
We investigate the critical behavior of the S=1/2 alternating Heisenberg chain using the density matrix renormalization group (DMRG). The ground-state energy per spin and singlet-t…
On angular momentum operator in quantum field theory
Bozhidar Z. Iliev
Relations between two definitions of (total) angular momentum operator, as a generator of rotations and in the Lagrangian formalism, are explored in quantum field theory. Generally…
N-body Gravitational Interactions: A General View and Some Heuristic Problems
V. Damgov, D. Gotchev, E. Spedicato +1
We present some non-standard approaches to the N-body problem in an attempt to overcome its epistemological limits. We provide, in a preliminary way, not-ordinary insights and brea…
Hurwitz spaces of triple coverings of elliptic curves and moduli spaces of abelian threefolds
Vassil Kanev
We prove that the moduli spaces A_3(D) of polarized abelian threefolds with polarizations of types D=(1,1,2), (1,2,2), (1,1,3) or (1,3,3) are unirational. The result is based on th…
On momentum operator in quantum field theory
Bozhidar Z. Iliev
The interrelations between the two definitions of momentum operator, via the canonical energy-momentum tensorial operator and as translation operator (on the operator space), are s…