Aiichi Iwazaki

Chern-Simons gauge theory for double-layer electron system

We present a microscopic theory of the fractional quantum Hall effect at the filling factor ν with even denominator, which is recently observed in a double-layer electron system. In our approach electrons belonging to different layers are interpreted as different types of anyons with appropriate statistics. The wavefunction of the Hall state is calculated, which is found to coincide with that of Halperin. We also analyze vortex (quasihole) excitations. It is shown that a single vortex carries electric charges on both of the layers; for instance, a vortex at ν=½ has the electric charge on one layer and -⅛e on the other layer. The ground state at the vicinity of ν=½ is given by a Wigner crystal made of these vortices.

Axion stars and fast radio bursts

We show that fast radio bursts arise from collisions between axion stars and neutron stars. The bursts are emitted in the atmosphere of the neutron stars. The observed frequencies of the bursts are given by the axion mass

Instabilities in non-expanding glasma

m_a

Ferromagnetic domain wall and a primordial magnetic field

such as

Decay of Color Gauge Fields in Heavy Ion Collisions and Nielsen-Olesen Instability

m_a/2\pi\simeq 1.4\,\mbox{GHz}\,\big(m_a/(6\times 10^{-6}\mbox{eV})\big)

Thermalization of Color Gauge Fields in High Energy Heavy Ion Collisions

. From the event rate

Quantum Hall states of gluons in dense quark matter

\sim 10^{-3}

Color ferromagnetism in quark matter

per year in a galaxy, we can determine the mass

Production of semi-quark-gluon-monopole plasma by glasma decay

\sim 10^{-11}M_{\odot}

COLOR FERROMAGNETIC QUARK MATTER IN NEUTRON STARS

of the axion stars. Using these values we can explain short durations (