In a Bose fiuid having a condensate, the density response has two components. One is associated with exciting single quasiparticles out of the condensate and the second is the usual two-body density response involving states above the condensate appearing in any fiuid. We derive the contribution of each component to the f-sum rule. The single quasiparticle contribution is proportional to the co...

We study the stability of an inflaton condensate in the presence of attractive inflaton self-interactions, in order to determine analytical conditions on the self-interaction couplings under which the condensate undergoes fragmentation. As an application of our results, we consider the stability of the inflaton condensate in α-attractor inflation. We show that the stability of the condensate de...

We investigate the continuum limit scaling of the scalar condensate in the N f = 2 Schwinger model on the lattice. We employ maximally twisted mass Wilson fermions and overlap fermions. We compute the scalar condensate by taking the trace of the propagator (direct method) and by utilizing the integrated Ward-Takahashi identity. While the scalar condensate comes out consistent using these two me...

Motivated by the recent realization of a Cr Bose-Einstein condensate, we consider the phase diagram of a general spin-three condensate as a function of its scattering lengths. We classify each phase according to its reciprocal spinor, using a method developed in a previous work. We show that such a classification can be naturally extended to describe the vortices for a spinor condensate by usin...

Analytical and numerical estimates show that a charged Affleck-Dine condensate will fracture into Q-balls only when the Hubble time is significantly larger than the inverse soft-breaking mass of the field in question. This would generally imply that the decay of the field into light fermions will compete with Q-ball formation. We will show that for typical flat directions the large field value ...

A power divider with ultra-wideband (UWB) performance has been designed. The quarter-wave transformer in the conventional Wilkinson power divider is replaced by an exponentially tapered microstrip line. Since the tapered line provides a consistent impedance transformation across all frequencies, very low amplitude ripple of 0.2 dB peak-to-peak in the transmission coefficient and superior input ...

The subject at hand is the technology of integrated use secondary combustible and thermal energy resources oil refining petrochemicals for power supply heat industrial residential urban areas. Currently, in through hydrocarbon gases are burned smokeless flares technological candles without practical electric industry. In production polyethylene, an average 230 t/h spent a flare altitude 105 m w...

We review the cosmological implications of the flat directions of the Minimally Supersymmetric Standard Model (MSSM). We describe how field condensates are created along the flat directions because of inflationary fluctuations. The post-inflationary dynamical evolution of the field condensate can charge up the condensate with B or L in a process known as Affleck-Dine baryogenesis. Condensate fl...

We present analytical and numerical properties of the coherently rotating AffleckDine condensate formed along MSSM flat directions with the radiative corrections to the mass terms included. We analyse the pressure p of the condensate, which is known to be negative if the potential grows slower than the field squared. We show that ellipticity of the orbit of the rotating field also affects the p...

We investigate the phase structure of the two-flavor dense QCD using the SchwingerDyson equation (SDE) with the improved ladder approximation in the Landau gauge. The SDE for diquark condensate (color superconducting condensate) and that for quarkantiquark condensate (chiral condensate) are solved separately. In the low density region both the SDE’s have nontrivial solutions which correspond to...