Field theory, when viewed as a medium coupled to a thermal bath, gains a useful new parameter : the temperature T . At the upper end of the T axis (g small) Yang–Mills theory (i.e. QCD without quarks, i.e. gluon black–body radiation) becomes susceptible to perturbation theory. The corresponding diagrammatics, however, runs against some “barrier of calculability”. At order g for the pressure and...

hydrogen is an unusual substance in that its molecule exists in two forms, known as ortho and para, with markedly different properties. energy level of the ortho molecule is higher than para, therefore, the latter is employed for industrial purposes. consequently, for a high  conversion of  ortho to para hydrogen a catalyst reactor must be employed.  therefore, one of  the main objectives of th...

Uygun ekolojik ko?ullar? ve binlerce y?ll?k kültürel birikimi, ba?c?l???n Tekirda?’da önemli ekonomik kaynaklardan biri olmas?n? sa?lam??t?r. Trakya dâhilinde Tekirda?, il de ?arköy Süleymanpa?a ilçeleri ba? alan? üzüm üretiminde önde gelir. Sofral?k ?arapl?k üretiminin yap?ld??? sahada, alanlar?, toplam alanlar?n?n %66,3’ünü olu?turur. Özellikle ?arköy, üretimi baz? büyük i?letmelerin yan? s?r...

_ ABSTRACT .w We study multi-Higgs models under the assumption that new physics exists at some high energy scale (RNP). If we perform the minimally required fine-tuning in order to set the electroweak scale (AEw), we find that the low-energy scalar spectrum is identical to that of the Standard Model with minimal Higgs content, up to corrections of order A$&/A&,. If, in addition, the model is su...

We propose a new realisation of hybrid inflation in supergravity where the inflaton field does not appear in the superpotential but contributes only through the Kähler potential. The scalar potential derived from an R-invariant superpotential has the same form as that of the Linde's original version. The correct magnitude of the density perturbations amplitude is found without any fine-tuning o...

D. G. Gadian, K. S. Panesar, A. J. Perez Linde, W. Senczenko, A. J. Horsewill, W. Kockenberger, and J. R. Owers-Bradley Imaging & Biophysics Unit, UCL Institute of Child Health, London, United Kingdom, School of Physics & Astronomy, University of Nottingham, Nottingham, United Kingdom, Sir Peter Mansfield MR Centre, School of Physics & Astronomy, University of Nottingham, Nottingham, United Kin...

Assuming the space dimension is not constant, but varies with the expansion of the universe, a Lagrangian formulation of a toy universe model is given. After a critical review of previous works, the field equations are derived and discussed. It is shown that this generalization of the FRW cosmology is not unique. There is a free parameter in the theory, C, with which we can fix the dimension of...

Traditionally, linguistics has been concerned with units at the level of the sentence or below, but recently, a body of research has emerged which demonstrates the existence and organization of linguistic units larger than the sentence. (Chafe, 1974; Goguen, Linde, and Weiner, to appear; Grosz, 1977; Halliday and Hasan, 1976; Labov, 1972; Linde, 1974, 1979, 1980a,198Cb; Linde and Goguen, 1978; ...