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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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26 papers · 2 filters
Brane Vacuum as Chain of Rotators
E. E. Donets, A. P. Isaev, C. Sochichiu +1
We analyse the noncommutative U(1) sigma model, which arises from the vacuum dynamics of the noncommutative charged tachyonic field. The sector of ``spherically symmetric'' excitat…
N=2 and N=4 supersymmetric Born-Infeld theories from nonlinear realizations
S. Bellucci, E. Ivanov, S. Krivonos
Starting from nonlinear realizations of the partially broken central-charge extended N=4 and N=8 Poincaré supersymmetries in D=4, we derive the superfield equations of N=2 and N=4…
Mining Energy from a Black Hole by Strings
V. Frolov, D. Fursaev
We discuss how cosmic strings can be used to mine energy from black holes. A string attached to the black hole gives rise to an additional channel for the energy release. It is dem…
Partial spontaneous breaking of two-dimensional supersymmetry
E. Ivanov, S. Krivonos, O. Lechtenfeld +1
We construct low-energy Goldstone superfield actions describing various patterns of the partial spontaneous breakdown of two-dimensional N=(1,1), N=(2,0) and N=(2,2) supersymmetrie…
On the Classification of N-extended Supersymmetric Quantum Mechanical Systems
A. Pashnev, F. Toppan
In this paper some properties of the irreducible multiplets of representation for the N = (p, q) - extended supersymmetry in one dimension are discussed. Essentially two results ar…
Black Hole Thermodynamics, Induced Gravity and Gravity in Brane Worlds
D. V. Fursaev
One of explanations of the black hole entropy implies that gravity is entirely induced by quantum effects. By using arguments based on the AdS/CFT correspondence we give induced gr…
D-dimensional massless particle with extended gauge invariance
A. Nersessian
We propose the model of dimensional massless particle whose Lagrangian is given by the th extrinsic curvature of world-line. The system has gauge degrees of freedom c…
Calculation of Ground State Energy for Confined Fermion Fields
Igor O. Cherednikov
A method for renormalization of the Casimir energy of confined fermion fields in (1+1)D is proposed. It is based on the extraction of singularities which appear as poles at the poi…
On the Equivalence of Noncommutative Models in Various Dimensions and Brane Condensation
Corneliu Sochichiu
Here we construct a map from the algebra of fields in two-dimensional noncommutative of U(1) Yang-Mills fields interacting with Kaluza-Klein scalars to a D-dimensional one, as a so…
Noncommutative Tachyonic Solitons. Interaction with Gauge Field
C. Sochichiu
We show that in the presence of U(1) noncommutative gauge interaction the noncommutative tachyonic system exhibits solitonic solutions for finite value of the noncommutativity para…
Field theory on a Lie group
M. V. Altaisky
The field model is generalized to the case when the field is defined on a Lie group: , is the left-invariant measure on a loc…
Hidden Symmetries of the Open N=2 String
Tatiana A. Ivanova, Olaf Lechtenfeld
It is known for ten years that self-dual Yang-Mills theory is the effective field theory of the open N=2 string in 2+2 dimensional spacetime. We uncover an infinite set of abelian…
Double-vector multiplet and partially broken N=4, d=3 supersymmetry
E. Ivanov, S. Krivonos, O. Lechtenfeld
We elaborate on a new N=2, d=3 supermultiplet (double-vector multiplet) with a non-trivial off-shell realization of the central charge. Its bosonic sector comprises two abelian gau…
Casimir effect for a dilute dielectric ball at finite temperature
V. V. Nesterenko, G. Lambiase, G. Scarpetta
The Casimir effect at finite temperature is investigated for a dilute dielectric ball; i.e., the relevant internal and free energies are calculated. The starting point in this stud…
Reparametrization-Invariant Path Integral in GR and "Big Bang" of Quantum Universe
M. Pawlowski, V. N. Pervushin
The reparametrization-invariant generating functional for the unitary and causal perturbation theory in general relativity in a finite space-time is obtained. The region of validit…
Casimir Energy of a Semi-Circular Infinite Cylinder
V. V. Nesterenko, G. Lambiase, G. Scarpetta
The Casimir energy of a semi-circular cylindrical shell is calculated by making use of the zeta function technique. This shell is obtained by crossing an infinite circular cylindri…
Matrix Models: Fermion Doubling vs. Anomaly
Corneliu Sochichiu
We present some arguments showing spectrum doubling of matrix models in the limit which is connected with fermionic determinant behaviour. The problems are similar to…
Time reparametrization-invariant dynamics of a relativistic string
B. M. Barbashov, V. N. Pervushin
The time-reparametrization-invariant dynamics of a relativistic string is studied in the Dirac generalized Hamiltonian theory by resolving the first class constraints. The reparame…
M[any] Vacua of IIB
C. Sochichiu
Description of the spectrum of fluctuations around a commutative vacuum solution, as well as around a solution with degenerate commutator in IIB matrix model is given in terms of s…
Quantum matrix algebra for the SU(n) WZNW model
P. Furlan, L. K. Hadjiivanov, A. P. Isaev +3
The zero modes of the chiral SU(n) WZNW model give rise to an intertwining quantum matrix algebra A generated by an n x n matrix a=(a^i_α) (with noncommuting entries) and by ration…
N=(4,4), 2D supergravity in SU(2)xSU(2) harmonic superspace
S. Bellucci, E. Ivanov
We work out the basics of conformal , 2D supergravity in the , 2D analytic harmonic superspace with two independent sets of harmonic variables. We define the rele…
Renormalizations in softly broken N=1 theories: Slavnov-Taylor identities
Igor Kondrashuk
Slavnov-Taylor identities have been applied to perform explicitly the renormalization procedure for the softly broken N=1 SYM. The result is in accordance with the previous results…
Diverse PBGS Patterns and Superbranes
E. Ivanov
This is a brief account of the approach to superbranes based upon the concept of Partial Breaking of Global Supersymmetry (PBGS).
Dressing Symmetries of Holomorphic BF Theories
T. A. Ivanova, A. D. Popov
We consider holomorphic BF theories, their solutions and symmetries. The equivalence of Cech and Dolbeault descriptions of holomorphic bundles is used to develop a method for calcu…