HAL Id: jpa-00220183
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Submitted on 1 Jan 1980
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PHASE TRANSITIONS IN A SPIN POLARIZED FLUID : THERMAL EQUILIBRIUM AND KINETIC
PHENOMENA
P. Nozières
To cite this version:
P. Nozières. PHASE TRANSITIONS IN A SPIN POLARIZED FLUID : THERMAL EQUILIBRIUM AND KINETIC PHENOMENA. Journal de Physique Colloques, 1980, 41 (C7), pp.C2-299-C2-299.
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JOURNAL DE PHYSIQUE CoZZoque C7, suppZdment au n07, Tome 41, juiZZet 2980, page C 7 - 2 9 9
PHASE TRANSITIONS IN A SPIN POLARIZED FLUID : THERMAL EQUILIBRIUM AND KINETIC PHENOMENA
I n s t i t u t Laue-Langevin, avenue des Martyrs, 156 X - 38042 GrenobZe Cedex, France.
Abstract. - The phase e q u i l i b r i u m o f l i q u i d and s o l i d 3 ~ e w i l l be discussed when t h e s p i n r e l a - x a t i o n t i m e i s l o n g compared t o t h e experimental t i m e scale. The concept o f an e f f e c t i v e magnetic f i e l d and t h e n a t u r e o f t h e phase diagram w i l l be c l a r i f i e d . Special emphasis w i l l be given t o i r r e v e r s i b l e aspects o f t h e problem : s p i n d i f f u s i o n near t h e moving i n t e r f a c e , entropy production d u r i n g m e l t i n g and subsequent ~ p i n ~ r e l a x a t i o n . Possible experiments w i l l be described, and t h e i r impact on microscopic t h e o r i e s o f He w i l l be discussed.
EQUILIBRIUM SHAPE AND OSCILLATION OF SURFACES OF SOLID HELIUM (CRYSTALLIZATION A N D M E L T I N B O F H E L I U M )
A.F. Andreev
I n s t i t u t e for PhysieaZ Problems, Academy of Sciences o f USSR, Vorobyevskoe Shosse 2, Moscow 11 7334, USSR.
Abstract. - These processes due t o t h e i r quantum coherent n a t u r e g i v e r i s e t o t h e existence o f the weakly damped c r y s t a l 1 iz a t i o n waves. Recently these waves were a c t u a l l y observed i n our I n s t i t u t e
Article published online by EDP Sciences and available at http://dx.doi.org/10.1051/jphyscol:1980745
