The model recently proposed in Ref.1 is used to derive linear integro– differential equations whose solutions provide reasonable estimates for the momentum distribution and condensate fraction in interacting many–boson system at zero temperature. An advantage of these equations is that they can be employed in the weak coupling regime and beyond. As an example, analytical treatment of the weak c...

A boson representation of the quantum affine algebra Uq(ŝl 2) is realized based on the Wakimoto construction. We discuss relations with the other boson representations.

Article history: Received 16 September 2016 Received in revised form 17 November 2016 Accepted 21 November 2016 Available online 24 November 2016 Editor: W.-D. Schlatter A search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks is presented, using 3.2 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector a...

We study angularly excited as well as interacting non-topological solitons, so-called Qballs and their gravitating counterparts, so-called boson stars in 3 + 1 dimensions. Q-balls and boson stars carry a non-vanishing Noether charge and arise as solutions of complex scalar field models in a flat space-time background and coupled minimally to gravity, respectively. We present examples of interac...

Vibrational density of states (VDOS) in a supercooled polydisperse liquid is computed by diagonalizing the Hessian matrix evaluated at the potential energy minima for systems with different values of polydispersity. An increase in polydispersity leads to an increase in the relative population of localized high-frequency modes. At low frequencies, the density of states shows an excess compared t...

We investigate a prominent vibrational feature in amorphous silica, the so–called boson peak, by means of molecular dynamics computer simulations. The dynamic structure factor S(q, ν) in the liquid, as well as in the glass state, scales roughly with temperature, in agreement with the harmonic approximation. By varying the size of the system and the masses of silicon and oxygen we show that the ...

A summary is presented of the workshop “top physics at linear colliders” that was held at IFIC Valencia from the 30th of June to the 3nd July 2015. We present an up-to-date status report of studies into the potential for top quark physics of lepton colliders with an energy reach that exceeds the top quark pair production threshold, with a focus on the linear collider projects ILC and CLIC. This...

The Tevatron proton-antiproton collider at Fermilab with its centre of mass energy of 1.96 TeV allows for pair production of top quarks and the study of top quark decay properties. This report reflects the current status of measurements of the W boson helicity in top quark decays and the ratio of top quark branching fractions as well as searches for neutral current top quark decays and pair pro...