The S = 1/2 antiferromagnetic Heisenberg model on multi-leg ladders is investigated. Criticality of the ground-state transition is explored by means of finite-size scaling. The ladders with an even number of legs and those with an odd number of legs are distinguished clearly. In the former, the energy gap opens up as ∆E ∼ J⊥, where J⊥ is the strength of the antiferromagnetic inter-chain couplin...

ABSTRACTThe purpose of this research is to create a simulation game Snakes and Ladders Career which used by Guidance Counseling teachers develop insight career readiness elementary school students. The steps development are (1) preparation, (2) preparation the initial product, (3) expert test, (4) revision first 5) field 6) final product. product trial was conducted on 9 users 2 experts. result...

We analyze an anisotropic spin 1/2 two legs ladder in the presence of various type of random perturbations. The generic phase diagram for the pure system, in a way similar to spin one chains, consists of four phases: an Antiferromagnet, a Haldane gap or a Singlet phase (depending on the sign of interchain coupling) and two XY phases designated by XY1 and XY2. The effects of disorder depend cruc...

employment has effective roles in socio-economic development and process job career is considered as one of important issue. also, job career is most important decisions that human decides over the life. overall, students are facing with two options for job career. first option is employed and second option is entrepreneurship. factors cognition that influencing on job career lead to better und...

In the game of Go, the question of whether a ladder—a method of capturing stones—works, is shown to be PSPACE-complete. Our reduction closely follows that of Lichtenstein and Sipser [LS80], who first showed PSPACE-hardness of Go by letting the outcome of a game depend on the capture of a large group of stones. We achieve greater simplicity by avoiding the need for pipes and crossovers.