2007

Soliton-soliton scattering in dipolar Bose-Einstein condensates

R. Nath 1, P. Pedri 2, L. M.N.B.F. Santos 1 Physical Review A: Atomic, Molecular and Optical Physics 76 (2007) 013606 We analyze the scattering of bright solitons in dipolar Bose-Einstein condensates placed in unconnected layers. Whereas for short-range interactions unconnected layers are independent, a remarkable consequence of the dipole interaction is the appearance of novel nonlocal interlayer effects. In particular, we […]

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SLE description of the nodal lines of random wave functions

E. Bogomolny 1, R. Dubertrand 1, C. Schmit 1 Journal of Physics A: Mathematical and General 40 (2007) 381-395 The nodal lines of random wave functions are investigated. We demonstrate numerically that they are well approximated by the so-called SLE_6 curves which describe the continuum limit of the percolation cluster boundaries. This result gives an additional support to the recent conjecture

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Role of conformational entropy in force-induced bio-polymer unfolding

Sanjay Kumar 1, Iwan Jensen 2, Jesper L. Jacobsen 3, Anthony J. Guttmann 2 Physical Review Letters 98 (2007) 128101 A statistical mechanical description of flexible and semi-flexible polymer chains in a poor solvent is developed in the constant force and constant distance ensembles. We predict the existence of many intermediate states at low temperatures stabilized by the force. A unified response to

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Relation between directed polymers in random media and random bond dimer models

Ying Jiang 1, Thorsten Emig 2 Physical Review B 75 (2007) 134413 We reassess the relation between classical lattice dimer models and the continuum elastic description of a lattice of fluctuating polymers. In the absence of randomness we determine the density and line tension of the polymers in terms of the bond weights of hard-core dimers on the square

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