Slave particle approaches are widely used in studies of exotic quantum phases. A complete description beyond mean field also contains dynamical gauge fields, while a simplified procedure considers Gutzwiller-projected trial states. We apply this in the context of bosonic models with ring exchanges realizing so-called exciton Bose liquid (EBL) phase and compare a Gutzwiller wave function against...

Kartiek Agarwal, Richard Schmidt, Bertrand Halperin, Vadim Oganesyan, Gergely Zaránd, Mikhail D. Lukin, and Eugene Demler Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA∗ ITAMP, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA Department of Engineering & Physics, CSI, CUNY, and The Graduate Center of CUNY, New York, NY 10016, US...

Hessam Habibian,1,2,3,* André Winter,1 Simone Paganelli,2,4 Heiko Rieger,1 and Giovanna Morigi1 1Theoretische Physik, Universität des Saarlandes, D-66123 Saarbrücken, Germany 2Departament de Fı́sica, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain 3Institut de Ciéncies Fotóniques (ICFO), Mediterranean Technology Park, E-08860 Castelldefels (Barcelona), Spain 4International Institute...

[Purpose] The purpose of this study was to compare the muscle activities of upper extremities during a drinking task between the stroke-affected and less-affected sides. [Subjects] Eight stroke patients (8 men; age 45.3 years; stroke duration 21.9 months) participated in this study. [Methods] Electromyography (EMG) was used to measure nine muscle activities of the upper extremity. The drinking ...

OBJECTIVES Determination of the phases in a stand-to-sit-to-stand task based on a derivative of the parameter with the lowest variance calculated based on the modified symmetry index. MATERIAL AND METHODS The study group comprised 11 healthy women and 11 healthy men from the University of Physical Education in Warsaw. The examination of the kinematic and kinetic parameters of sitting down and...

This paper presents an approach of identifying prosthetic knee movements through pattern recognition of mechanical responses at the internal socket's wall. A quadrilateral double socket was custom made and instrumented with two force sensing resistors (FSR) attached to specific anterior and posterior sites of the socket's wall. A second setup was established by attaching three piezoelectric sen...

copper–silver bimetallic strips were produced by cold roll welding process and were treated by diffusion annealing in the temperature range 250–800 ?c. the interface bonding strength was determined by bending and peeling tests, resistance, conductivity and micro hardness profiles were determined and microstructure in the interface region was observed by optical microscope. electrical resistance...