Vortices and quark confinement in non-Abelian gauge theories

S Mandelstam - Physics Reports, 1976 - inis.iaea.org
[en] Non-Abelian vortices of the type proposed by Nielsen and Olesen are discussed. It is
shown that the vortices must contain a single unit of quantized flux absorbed by a Dirac …

Soliton operators for the quantized sine-Gordon equation

S Mandelstam - Physical Review D, 1975 - APS
… is not well defined and because the product of two $'s becomes singular as their arguments
… if the limit of taking an infinitely narrow bare vortex cannot be carried through cons iste ntly. …

[BOOK][B] Variational principles in dynamics and quantum theory

W Yourgrau, S Mandelstam - 1979 - books.google.com
… A similar result can be proved if S is to the left of R. It follows that, since S is any point on AB,
the time taken to travel along PRQ is less than that taken to travel along any other path from …

Determination of the pion-nucleon scattering amplitude from dispersion relations and unitarity. General theory

S Mandelstam - Physical Review, 1958 - APS
… transfer is just s„we obtain dispersion relations in which s, is kept constant; if A is written as …
While we have for convenience used the three variables s, s., and t, which are the energies of …

Theory of the low-energy pion-pion interaction

GF Chew, S Mandelstam - Physical Review, 1960 - APS
The double-dispersion representation is applied to the problem of pion-pion scattering, and
it is shown that, if inelastic effects are important only at very high energies and S-wave …

Interacting-string picture of dual-resonance models

S Mandelstam - Nuclear Physics B, 1973 - Elsevier
… provides us with a complete quantum-mechanical system for which finite-time transition
amplitudes can be calculated, though for practical purposes we would only be interested in S-…

Quantum electrodynamics without potentials

S Mandelstam - Annals of Physics, 1962 - Elsevier
… We can then invert the procedure of the last section and define tbe 4’s in terms of the a’s by
… g’s will later he identified with Green’s functions in the Lorent,z gauge. The suhscript#s are …

Dual-resonance models

S Mandelstam - Physics Reports, 1974 - Elsevier
… A as a function of s and t. We wish to show that A is analytic except for poles in s when a(s) is
a … We also wish to show that the residues at the poles in s are polynomials in z5 or, in other …

Feynman rules for electromagnetic and Yang-Mills fields from the gauge-independent field-theoretic formalism

S Mandelstam - Physical Review, 1968 - APS
The Feynman rules for the Yang-Mills field, originally derived by Feynman and DeWitt from S-matrix
theory and the tree theorem, are here derived as a consequence of field theory. Our …

Approximation scheme for quantum chromodynamics

S Mandelstam - Physical Review D, 1979 - APS
An approximation scheme is proposed for calculating masses of QQ mesons in quantum
chromodynamics. The vacuum instability is removed, not by giving the magnetic field an …