4,017 research outputs found
Emergent phases in a compass chain with multisite interactions
We study a dimerised spin chain with biaxial magnetic interacting ions in the
presence of an externally induced three-site interactions out of equilibrium.
In the general case, the three-site interactions play a role in renormalizing
the effective uniform magnetic field. We find that the existence of zero-energy
Majorana modes is intricately related to the sign of Pfaffian of the
Bogoliubov-de Gennes Hamiltonian and the relevant topological invariant.
In contrast, we show that an exotic spin liquid phase can emerge in the compass
limit through a Berezinskii-Kosterlitz-Thouless (BKT) quantum phase transition.
Such a BKT transition is characterized by a large dynamic exponent , and
the spin-liquid phase is robust under a uniform magnetic field. We find the
relative entropy and the quantum discord can signal the BKT transitions. We
also uncover a few differences in deriving the correlation functions for the
systems with broken reflection symmetry.Comment: 12 pages, 10 figure
QCD corrections to the R-parity violating processes at hadron colliders
We present the QCD corrections to the processes at
the Tevatron and the CERN large hadron collider(LHC). The numerical results
show that variation of K factor is in the range between and
at the Tevatron(LHC). We find that the QCD correction part from
the one-loop gluon-gluon fusion subprocess is remarkable at the LHC and should
be taken into account.Comment: 7 pages, 6 Postscript figures, to be appeared in Phy. Rev.
The Effects of Aroma on Relaxation During the Group Calligraphy Activity of Elderly People: Case Studies in China and Japan
Previous research has found that aromatherapy has positive effects on ability and mood. However, only a limited number of studies have focused on the effects of aroma on elderly people when they are engaged in group activities, although it has proven to be beneficial to the elderly. Consequently, we studied the effects of aroma on the relaxation of elderly participants of a group activity by conducting an experiment in which we used orange oil to provide an "aroma environment" and plain water to provide a "without-aroma environment." Our results suggest that citrus aromas have an effect on the physiological and psychological relaxation of elderly people when they are participating in group activities. Further studies are required focusing on the observation of different kinds of aromas and the sustainability of the same aroma.Art and Design Research for Sustainable Development ; September 22, 2018Conference: Tsukuba Global Science Week 2018Date: September 20-22, 2018Venue: Tsukuba International Congress Center Sponsored: University of Tsukub
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