1,137 research outputs found
The Kronecker limit formulas via the distribution relation
In this paper, we give a proof of the classical Kronecker limit formulas
using the distribution relation of the Eisenstein-Kronecker series. Using a
similar idea, we then prove -adic analogues of the Kronecker limit formulas
for the -adic Eisenstein-Kronecker functions defined in our previous paper
Algebraic theta functions and p-adic interpolation of Eisenstein-Kronecker numbers
We study the properties of Eisenstein-Kronecker numbers, which are related to
special values of Hecke -function of imaginary quadratic fields. We prove
that the generating function of these numbers is a reduced (normalized or
canonical in some literature) theta function associated to the Poincare bundle
of an elliptic curve. We introduce general methods to study the algebraic and
-adic properties of reduced theta functions for CM abelian varieties. As a
corollary, when the prime is ordinary, we give a new construction of the
two-variable -adic measure interpolating special values of Hecke
-functions of imaginary quadratic fields, originally constructed by
Manin-Vishik and Katz. Our method via theta functions also gives insight for
the case when is supersingular. The method of this paper will be used in
subsequent papers to study the precise -divisibility of critical values of
Hecke -functions associated to Hecke characters of quadratic imaginary
fields for supersingular , as well as explicit calculation in two-variables
of the -adic elliptic polylogarithm for CM elliptic curves.Comment: 55 pages, 2 figures. Minor misprints and errors were correcte
On the de Rham and p-adic realizations of the Elliptic Polylogarithm for CM elliptic curves
In this paper, we give an explicit description of the de Rham and p-adic
polylogarithms for elliptic curves using the Kronecker theta function. We prove
in particular that when the elliptic curve has complex multiplication and good
reduction at p, then the specializations to torsion points of the p-adic
elliptic polylogarithm are related to p-adic Eisenstein-Kronecker numbers,
proving a p-adic analogue of the result of Beilinson and Levin expressing the
complex elliptic polylogarithm in terms of Eisenstein-Kronecker-Lerch series.
Our result is valid even if the elliptic curve has supersingular reduction at
p.Comment: 61 pages, v2. Sections concerning the Hodge realization was moved to
the appendi
Quantized vortices in superfluid helium and atomic Bose-Einstein condensates
This article reviews recent developments in the physics of quantized vortices
in superfluid helium and atomic Bose-Einstein condensates. Quantized vortices
appear in low-temperature quantum condensed systems as the direct product of
Bose-Einstein condensation. Quantized vortices were first discovered in
superfluid 4He in the 1950s, and have since been studied with a primary focus
on the quantum hydrodynamics of this system. Since the discovery of superfluid
3He in 1972, quantized vortices characteristic of the anisotropic superfluid
have been studied theoretically and observed experimentally using rotating
cryostats. The realization of atomic Bose-Einstein condensation in 1995 has
opened new possibilities, because it became possible to control and directly
visualize condensates and quantized vortices. Historically, many ideas
developed in superfluid 4He and 3He have been imported to the field of cold
atoms and utilized effectively. Here, we review and summarize our current
understanding of quantized vortices, bridging superfluid helium and atomic
Bose-Einstein condensates. This review article begins with a basic
introduction, which is followed by discussion of modern topics such as quantum
turbulence and vortices in unusual cold atom condensates.Comment: 99 pages, 20 figures, Review articl
Observation of Hysteretic Transport Due to Dynamic Nuclear Spin Polarization in a GaAs Lateral Double Quantum Dot
We report a new transport feature in a GaAs lateral double quantum dot that
emerges only for magnetic field sweeps and shows hysteresis due to dynamic
nuclear spin polarization (DNP). This DNP signal appears in the Coulomb
blockade regime by virtue of the finite inter-dot tunnel coupling and
originates from the crossing between ground levels of the spin triplet and
singlet extensively used for nuclear spin manipulations in pulsed gate
experiments. The unexpectedly large signal intensity is suggestive of
unbalanced DNP between the two dots, which opens up the possibility of
controlling electron and nuclear spin states via DC transport.Comment: 5 pages, 4 figure
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