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On factorisation at small x

Journal of High Energy Physics Springer Nature 2000:07 (2000) 054

Authors:

Marcello Ciafaloni, Dimitri Colferai, Gavin P Salam

On factorisation at small x

(2000)

Authors:

Marcello Ciafaloni, Dimitri Colferai, Gavin P Salam

LOGARITHMIC UNIFICATION FROM SYMMETRIES ENHANCED IN THE SUB-MILLIMETER INFRARED

Chapter in The Many Faces of the Superworld, World Scientific Publishing (2000) 627-648

Authors:

NIMA ARKANI鈥揌AMED, SAVAS DIMOPOULOS, JOHN MARCH-RUSSELL

Power corrections and the interplay between perturbative and non-perturbative phenomena

NUCL PHYS B-PROC SUP 86 (2000) 430-436

Authors:

GP Salam, G Zanderighi

Abstract:

We discuss the issue of interplay between perturbative and non-perturbative phenomena for power corrections to e(+)e(-) event shapes.

Saltatory Relaxation of the Cosmological Constant

ArXiv hep-th/0005276 (2000)

Authors:

Jonathan L Feng, John March-Russell, Savdeep Sethi, Frank Wilczek

Abstract:

We modify and extend an earlier proposal by Brown and Teitelboim to relax the effective cosmological term by nucleation of branes coupled to a three-index gauge potential. Microscopic considerations from string/M theory suggest two major innovations in the framework. First, the dependence of brane properties on the compactification of extra dimensions may generate a very small quantized unit for jumps in the effective cosmological term. Second, internal degrees of freedom for multiply coincident branes may enhance tunneling rates by exponentially large density of states factors. These new features essentially alter the relaxation dynamics. By requiring stability on the scale of the lifetime of the universe, rather than absolute stability, we derive a non-trivial relation between the supersymmetry breaking scale and the value of the cosmological term. It is plausibly, though not certainly, satisfied in Nature.