We explore the NLC linac optics compatible with a low energy scenario where initially only part of the full linac is installed. Optics modification suitable for a low energy beam running and upgrade to the nominal energy is discussed. Linac parameters and beam tolerances in the modified lattice are compared to the nominal design. Abstract We explore the NLC linac optics compatible with a low en...

The classical monomer-dimer model in two-dimensional lattices has been shown to belong to the "#P-complete" class, which indicates the problem is computationally "intractable." We use exact computational method to investigate the number of ways to arrange dimers on mxn two-dimensional rectangular lattice strips with fixed dimer density rho . For any dimer density 0<rho<1 , we find a logarithmic...

When a self-localized quasiparticle excitation propagates along a discrete one-dimensional lattice, it becomes subject to a dissipation that converts the kinetic energy into lattice vibrations. Eventually the kinetic energy no longer enables the excitation to cross over the minimum energy barrier between neighboring sites, and the excitation becomes localized within a lattice cell. In the case ...

The implications of lattice field theory for particle physics go far beyond the traditional studies of low energy QCD phenomenology which are currently the major focus of the field. New strongly coupled field theories may well be discovered at LHC scales; for these the lattice will be the major tool. Also supersymmetry is important to many high energy models so their phase structure and spectru...

The paper theoretically investigates the peculiarities of energy diagram of asymmetric graded-band-gap superlattices with linear coordinate dependences of band gap and electron affinity. For calculating the energy diagram of asymmetric graded-band-gap superlattices, linearized Poisson's equation has been solved for the two layers forming a period of the superlattice. The obtained coordinate dep...

The ensemble projector Monte Carlo method is a lattice Monte Carlo method for studying gauge theories with and without Fermions in the Hamiltonian formulat ion. We study the compact U(1) lattice gauge theory with fermions in d = 2 + 1 dimensions. There are matrix elements with positive and negative signs in lattice gauge theories with fermions. As in the case of the Schwinger model, we find the...

Lattice images formed by plasmon energy-loss electrons in an energy-filtered transmission electron microscope are compared for different experimental parameters. The image resolution is primarily determined by chromatic aberration which is controlled by the width of the energy selection window. With an energy slit 3 eV in width, the plasmon loss electron image shows the same resolution and cont...

We present a free energy lattice Boltzmann approach to modelling the dynamics of liquid drops on chemically patterned substrates. We start by describing a choice of free energy that reproduces the bulk behaviour of a liquid-gas system together with the varying contact angles on surfaces with chemical patterning. After showing how the formulation of the free energy fits in to the framework of la...