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Scaling of fluctuation for directed polymers with random interaction

Sutapa Mukherji-+,++, Somendra M Bhattacharjee-+,++ and A Baumgärtner-+

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LETTER TO THE EDITOR

Using a finite size scaling form for reunion probability, we show numerically the existence of a binding - unbinding transition for directed polymers with random interaction. The cases studied are (A1) two chains in 1 + 1 dimensions, (A2) two chains in 2 + 1 dimensions and (B) three chains in 1 + 1 dimensions. A similar finite size scaling form for fluctuation establishes a disorder-induced transition with identical exponents for cases A2 and B. The length scale exponents in all the three cases are in agreement with previous exact renormalization-group results.


PACS

61.41.+e Polymers, elastomers, and plastics

64.60.A- Specific approaches applied to studies of phase transitions

64.60.Cn Order–disorder transformations

05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion

MSC

82B26 Phase transitions (general)

82D60 Polymers

82B44 Disordered systems (random Ising models, random Schrödinger operators, etc.)

82B28 Renormalization group methods (See also 81T17)

Subjects

Soft matter, liquids and polymers

Condensed matter: structural, mechanical & thermal

Statistical physics and nonlinear systems

Dates

Issue 5 (7 March 1996)

Received 4 December 1995



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