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19942026
most citedGATE : a simulation toolkit for PET and SPECT

2.2k citations

Showing 2003Show all

13 papers · 1 filter

hep-th2003★ 1 cited

Relativistic Violation Invariance, Multiverses and Quantum Field Theory

J. Gamboa, M. Loewe, F. Mendez

The possibility of interaction among multiverses is studied assuming that in the first instants of the big-bang, many disjoint regions were created producing many independent unive…

hep-th2003★ 21 cited

Nonlinear superconformal symmetry of a fermion in the field of a Dirac monopole

Carlos Leiva, Mikhail S. Plyushchay

We study a longstanding problem of identification of the fermion-monopole symmetries. We show that the integrals of motion of the system generate a nonlinear classical Z_2-graded P…

hep-th2003★ 43 cited

Subleading critical exponents from the renormalisation group

Daniel F. Litim, Lautaro Vergara

We study exact renormalisation group equations for the 3d Ising universality class. At the Wilson-Fisher fixed point, symmetric and antisymmetric correction-to-scaling exponents ar…

cond-mat.stat-mech2003★ 1 cited

Binaries and core-ring structures in self-gravitating systems

I. Ispolatov

Low energy states of self-gravitating systems with finite angular momentum are considered. A constraint is introduced to confine cores and other condensed objects within the system…

hep-th2003★ 30 cited

Interaction via reduction and nonlinear superconformal symmetry

Andres Anabalon, Mikhail S. Plyushchay

We show that the reduction of a planar free spin-1/2 particle system by the constraint fixing its total angular momentum produces the one-dimensional Akulov-Pashnev-Fubini-Rabinovi…

hep-th2003★ 2 cited

Central Charges and Effective Action at Finite Temperature and Density

J. Gamboa, J. Lopez-Sarrion, M. Loewe +1

The current algebra for gauge theories like QCD at finite temperature and density is studied. We start considering, the massless Thirring model at finite temperature and density, f…

hep-th2003★ 37 cited

Superconformal mechanics and nonlinear supersymmetry

Carlos Leiva, Mikhail S. Plyushchay

We show that a simple change of the classical boson-fermion coupling constant, , , in the superconformal mechanics model gives rise to a radical change of a sy…

hep-th2003★ 5 cited

Quantum Theory of Tensionless Noncommutative p-Branes

J. Gamboa, M. Loewe, F. Mendez

The quantum theory involving noncommutative tensionless p-branes is studied following path integral methods. Our procedure allow a simple treatment for generally covariant noncommu…

cond-mat.stat-mech2003★ 22 cited

Collapses and explosions in self-gravitating systems

I. Ispolatov, M. Karttunen

Collapse and reverse to collapse explosion transition in self-gravitating systems are studied by molecular dynamics simulations. A microcanonical ensemble of point particles confin…

hep-th2003★ 22 cited

Fermions scattering in a three dimensional extreme black hole background

S. Lepe, F. Mendez, J. Saavedra +1

The absorption cross section for scattering of fermions off an extreme BTZ black hole is calculated. It is shown that, as in the case of scalar particles, an extreme BTZ black hole…

hep-th2003★ 63 cited

Quantum Theory of Noncommutative Fields

J. M. Carmona, J. L. Cortes, J. Gamboa +1

Generalizing the noncommutative harmonic oscillator construction, we propose a new extension of quantum field theory based on the concept of "noncommutative fields". Our descriptio…

hep-th2003★ 73 cited

Conformal Symmetry of Relativistic and Nonrelativistic Systems and AdS/CFT Correspondence

Carlos Leiva, Mikhail S. Plyushchay

The nonlinear realization of conformal so(2,d) symmetry for relativistic systems and the dynamical conformal so(2,1) symmetry of nonrelativistic systems are investigated in the con…

hep-th2003★ 63 cited

Higher Spins from Tensorial Charges and OSp(N|2n) Symmetry

Mikhail Plyushchay, Dmitri Sorokin, Mirian Tsulaia

It is shown that the quantization of a superparticle propagating in an N=1, D=4 superspace extended with tensorial coordinates results in an infinite tower of massless spin states…