Static Potential in a String Model With Extrinsic Curvatures

Olesen, Poul; Yang, Sung-Kil

doi:10.1016/0550-3213(87)90262-8

Static Potential in a String Model With Extrinsic Curvatures

Poul Olesen
(
- Bohr Inst.
)
,
Sung-Kil Yang
(
- Bohr Inst.
)

Aug, 1986

20 pages

Published in:

Nucl.Phys.B 283 (1987) 73-92

Published: 1987

DOI:

10.1016/0550-3213(87)90262-8

Report number:

NBI-HE-86-33

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Abstract: (Elsevier)

The static quark potential in a string model including extrinsic curvature effects is studied in the large d limit, where d is the dimensionality of euclidean space. At large distances it is explicitly shown that the physical string tension is dynamically generated. Examining the large-distance “Coulomb” term in the potential, we show that the non-perturbative effects in general generate non-gaussian effective theories in the infrared regime. At large distances the d → ∞ saddle point is stable for a large range of parameters.

MODEL: STRING
QUARK ANTIQUARK: POTENTIAL
EXPANSION 1/D
FIELD THEORY: EFFECTIVE ACTION
FIELD THEORY: ASYMPTOTIC FREEDOM
RENORMALIZATION GROUP
EFFECT: NONPERTURBATIVE

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