TY - JOUR

T1 - Collapse of randomly self-interacting polymers

AU - Kantor, Y.

AU - Kardar, M.

PY - 1994/10/20

Y1 - 1994/10/20

N2 - We use complete enumeration and Monte Carlo techniques to study self-avoiding walks with random nearest-neighbor interactions described by v0 qi qj, where qi = ± 1 is a quenched sequence of “charges” on the chain. For equal numbers of positive and negative charges (N+ = N−), the polymer with v0 > 0 undergoes a transition from self-avoiding behavior to a compact state at a temperature θ≈ 1.2v0. The collapse temperature θ(x) decreases with the asymmetry x = |N+ - N−|/(N+ + N−) and vanishes at x≈ 0.6. For v0 < 0, a θ-point is present at all x.

AB - We use complete enumeration and Monte Carlo techniques to study self-avoiding walks with random nearest-neighbor interactions described by v0 qi qj, where qi = ± 1 is a quenched sequence of “charges” on the chain. For equal numbers of positive and negative charges (N+ = N−), the polymer with v0 > 0 undergoes a transition from self-avoiding behavior to a compact state at a temperature θ≈ 1.2v0. The collapse temperature θ(x) decreases with the asymmetry x = |N+ - N−|/(N+ + N−) and vanishes at x≈ 0.6. For v0 < 0, a θ-point is present at all x.

UR - http://www.scopus.com/inward/record.url?scp=84957322948&partnerID=8YFLogxK

U2 - 10.1209/0295-5075/28/3/003

DO - 10.1209/0295-5075/28/3/003

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AN - SCOPUS:84957322948

VL - 28

SP - 169

EP - 174

JO - Journal de Physique (Paris), Lettres

JF - Journal de Physique (Paris), Lettres

SN - 0295-5075

IS - 3

ER -