Evolution of fields in a second order phase transition.
نویسندگان
چکیده
We analyse the evolution of scalar and gauge fields during a second order phase transition using a Langevin equation approach. We show that topological defects formed during the phase transition are stable to thermal fluctuations. Our method allows the field evolution to be followed throughout the phase transition, for both expanding and non-expanding Universes. The results verify the Kibble mechanism for defect formation during phase transitions. ∗and King’s College, Cambridge
منابع مشابه
توصیف توپولوژیکی گذار نیمفلزی بلور MnAs
Topological analysis of the electronic charge density is introduced as a new tool for studying the electronic properties of the materials. In this method, the eigen values of the Hessian matrix of the electronic charge density as an scalar field are used to estimate the strength of the atomic bonds. We employ this method to study the half-metallic phase transition of MnAs in zinc blende structu...
متن کاملEight-potential-well order-disorder ferroelectric model and effects of random fields
An eight-potential-well order-disorder ferroelectric model was presented and the phase transition was studied under the mean-field approximation. It was shown that the two-body interactions are able to account for the first-order and the second order phase transitions. With increasing the random fields in the system, a first-order phase transition is transformed into a second-order phase transi...
متن کاملThe effect of nano transition metals on microstructure and phase evolution of low carbon MgO-C refractories
In the present study, the effect of Iron Nitrate as catalytic precursor to in situ formation of nano-Fe particles in phenolic resin and microstructural evolution of MgO-C refractories has been investigated. Therefore, various samples according to matrix section formulation of low carbon MgO-C refractories (LCMCR’s) with 0 and 6 wt% (Fe/Phenolic resin) were prepared and phase and microstructure ...
متن کاملKosterlitz-Thouless phase and continuous melting transition in layered superconductors immersed in a parallel magnetic field
B − T phase diagram and phase transitions of interlayer Josephson vortices are investigated. For magnetic fields above Bmc = φ0/2 √ 3γd, we find a Kosterlitz-Thouless (KT) type intermediate phase characterized by in-plane two-dimensional, quasi long-range orders (QLROs) of vortex alignment and superconductivity. The transformation to high-temperature normal phase is a KT transition. The evoluti...
متن کاملThe Comparative Study of Utilizing "Architectural Technology" in "Architectural Conservation" in Iran and the West
During the last few decades the western societies has accomplished successful projects by creative utilization of architectural technology in architectural conservation such as the Columbia Museum of Art, New Acropolis Museum, and dozens of other projects. This is while in Iran we have not been able to benefit from architectural technology in architectural conservation measures in a creative wa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review. D, Particles and fields
دوره 52 6 شماره
صفحات -
تاریخ انتشار 1995