scholarly journals Spinning particles as a nonlinear realization of the superworldline reparametrization invariance

2003 ◽  
Vol 67 (2) ◽  
Author(s):  
J. Malinsky ◽  
V. P. Akulov ◽  
N. Abdellatif ◽  
A. Pashnev
Keyword(s):  
Nonlinear Realization ◽  
Spinning Particles ◽  
Reparametrization Invariance

scholarly journals Effective Action and Measure in Matrix Model of IIB Superstrings

1997 ◽  
Vol 12 (31) ◽  
pp. 2331-2340 ◽  
Author(s):  
L. Chekhov ◽  
K. Zarembo
Keyword(s):  
Matrix Model ◽  
Effective Action ◽  
Continuum Limit ◽  
Auxiliary Field ◽  
Large N ◽  
The Matrix ◽  
Reparametrization Invariance ◽  
The Continuum ◽  
Induced Measure

We calculate an effective action and measure induced by the integration over the auxiliary field in the matrix model recently proposed to describe IIB superstrings. It is shown that the measure of integration over the auxiliary matrix is uniquely determined by locality and reparametrization invariance of the resulting effective action. The large-N limit of the induced measure for string coordinates is discussed in detail. It is found to be ultralocal and, thus, is possibly irrelevant in the continuum limit. The model of the GKM type is considered in relation to the effective action problem.

Internal Structure of Spinning Particles

1955 ◽  
Vol 100 (3) ◽  
pp. 924-931 ◽  
Author(s):  
David Finkelstein
Keyword(s):  
Internal Structure ◽  
Spinning Particles

scholarly journals SPINNING PARTICLES ON SPACELIKE HYPERSURFACES AND THEIR REST FRAME DESCRIPTION

1999 ◽  
Vol 14 (09) ◽  
pp. 1429-1484 ◽  
Author(s):  
FRANCESCO BIGAZZI ◽  
LUCA LUSANNA
Keyword(s):  
Spin Structure ◽  
Rest Frame ◽  
Negative Energy ◽  
Nonrelativistic Limit ◽  
Critical Discussion ◽  
Positive Energy ◽  
Spinning Particle ◽  
Spinning Particles ◽  
Spacelike Hypersurfaces ◽  
Energy Formula

A new spinning particle with a definite sign of the energy is defined on spacelike hypersurfaces after a critical discussion of the standard spinning particles. It is the pseudoclassical basis of the positive energy [Formula: see text] [or negative energy [Formula: see text]] part of the [Formula: see text] solutions of the Dirac equation. The study of the isolated system of N such spinning charged particles plus the electromagnetic field leads to their description in the rest frame Wigner-covariant instant form of dynamics on the Wigner hyperplanes orthogonal to the total four-momentum of the isolated system (when it is timelike). We find that on such hyperplanes these spinning particles have a nonminimal coupling only of the type "spin–magnetic field," like the nonrelativistic Pauli particles to which they tend in the nonrelativistic limit. The Lienard–Wiechert potentials associated with these charged spinning particles are found. Then, a comment is made on how to quantize the spinning particles respecting their fibered structure describing the spin structure.

BOUNDARY CONDITIONS IN FIRST QUANTIZATION

1991 ◽  
Vol 06 (22) ◽  
pp. 3997-4008 ◽  
Author(s):  
W. SIEGEL
Keyword(s):  
Field Theory ◽  
General Solution ◽  
Boundary Conditions ◽  
String Field Theory ◽  
Light Cone ◽  
Bosonic String ◽  
Second Quantization ◽  
Spinning Particles

In the BRST approach to first quantization, bosonic ghosts can cause ambiguities in the cohomology (and thus in second quantization). We show how nonminimal terms give a general solution to this problem, avoiding the need for “picture-changing operators.” As examples, we consider spinning particles, superparticles, covariantized light cone bosonic string field theory, and NSR superstring field theory.

scholarly journals UV constraints on massive spinning particles: lessons from the gravitino

2020 ◽  
Vol 2020 (2) ◽  
Author(s):  
Scott Melville ◽  
Diederik Roest ◽  
David Stefanyszyn
Keyword(s):  
Spinning Particles
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