Although CP-symmetry breaking has only been seen in neutral kaon decays, this mysterious phenomenon is expected to occur elsewhere. In this talk, how CP violation can arise in strange-baryon decays is briefly reviewed. The current status and prospects for searching for such an effect will be presented. Strange baryons were first discovered in cosmic-ray experiments in the late 1940s as particle...

A bstract We demonstrate that the physics which resolves naturalness problems need not take form of new particles and can sometimes manifest itself as higher dimensional operators. As a proof principle, we present simple model where scale is parametrically separated from estimated via arguments applied to self-quartic couplings. In this example, appear far above $$ m/\sqrt{\lambda } <mml:math x...

The special geometry of calibrated cycles, closely related to mirror symmetry among Calabi–Yau 3-folds, is itself a real form of a new subject, which we call slightly deformed algebraic geometry. On the other hand, both of these geometries are parallel to classical gauge theories and their complexifications. This article explains this parallelism, so that the appearance of invariants of new typ...

We provide vector-like gauge theories which break supersymmetry dynamically. ⋆ JSPS Research Fellow. There is a piece of folklore which holds that vector-like gauge theories cannot break supersymmetry dynamically. In this letter, we point out remarkable exceptions to this piece of folklore. Let us consider a supersymmetric SU(2) gauge theory with four doublet chiral superfields Qi. We also intr...

We analyze a structure of dynamical chiral symmetry breaking in orbifold gauge theories with matter fields (fermions) on the fixed point. We find that the boundary chiral phase structure of QED and QCD on the orbifold is quite nontrivial depending on the bulk constitution, and we claim that particular attention should be given to the dynamically generated masses in various kinds of phenomenolog...

For any practical superconductor the magnitude of the critical current density, Jc, is crucially important. It sets the upper limit for current in the conductor. Usually Jc falls rapidly with increasing external magnetic field, but even in zero external field the current flowing in the conductor generates a self-field that limits Jc. Here we show for thin films of thickness less than the London...

We calculate the polarization of Λ and Λ̄ particles produced in deep inelastic polarized lepton scattering. We use two models: the näıve quark model and a model in which SU(3)F symmetry is used to deduce the spin structure of SU(3) octet hyperons from that of the proton. We perform the calculations for Λ and Λ̄ produced directly or as decay products of Σ and Σ. D r a f t : F e b r u a r y 1 , 2 0...

We consider the proposal that predicts holographic duality between certain 2D minimal models at large central charge and Vasiliev 3D higher spin gravity with a single complex field. We compute the scalar correlator in the background of a higher spin black hole at order O(α5) in the chemical potential α associated with the spin-3 charge. The calculation is performed at generic values of the symm...

We study the QED bound-state problem in a light-front hamiltonian approach. Starting with a bare cutoff QED Hamiltonian, H B , with matrix elements between free states of drastically different energies removed, we perform a similarity transformation that removes the matrix elements between free states with energy differences between the bare cutoff, Λ, and effective cutoff, λ (λ < Λ). This gene...

Symmetry analysis is a standard and powerful method in the analysis of differential equations, and in the determination of explicit solutions of nonlinear ones. It was remarked by Muriel and Romero [10] (see also the work by Pucci and Saccomandi [14]) that for ODEs the notion of symmetry can be somehow relaxed to that of lambda-symmetry (see below), still retaining the relevant properties for s...