1,835,238 research outputs found
Explicit Relation of Quantum Hall Effect and Calogero-Sutherland Model
Explicit relation between Laughlin state of the quantum Hall effect and
one-dimensional(1D) model with long-ranged interaction () is discussed.
By rewriting lowest Landau level wave functions in terms of 1D representation,
Laughlin state can be written as a deformation of the ground state of
Calogero-Sutherland model. Corresponding to Laughlin state on different
geometries, different types of 1D interaction models are derived.Comment: 10 page
Higher-spin Gauge and Trace Anomalies in Two-dimensional Backgrounds
Two-dimensional quantum fields in electric and gravitational backgrounds can
be described by conformal field theories, and hence all the physical
(covariant) quantities can be written in terms of the corresponding holomorphic
quantities. In this paper, we first derive relations between covariant and
holomorphic forms of higher-spin currents in these backgrounds, and then, by
using these relations, obtain higher-spin generalizations of the trace and
gauge (or gravitational) anomalies up to spin 4. These results are applied to
derive higher-moments of Hawking fluxes in black holes in a separate paper
arXiv:0710.0456.Comment: 23 page
Iso-array rewriting P systems with context-free iso-array rules
A new computing model called P system is a highly distributed and
parallel theoretical model, which is proposed in the area of membrane computing. Ceterchi et al. initially proposed array rewriting P systems by extending the notion of string rewriting P systems to arrays (2003). A theoretical model for picture generation using context-free iso-array grammar rules and puzzle iso-array grammar rules are introduced by Kalyani et al. (2004, 2006). Also iso-array rewriting P systems for iso-picture languages have been studied by Annadurai et al. (2008). In this paper we consider the context-free iso-array rules and context-free puzzle iso-array rules in iso-array rewriting P systems and examine the generative powers
of these P systems
QCD phase diagram at finite baryon and isospin chemical potentials
The phase structure of two-flavor QCD is explored for thermal systems with
finite baryon- and isospin-chemical potentials, mu_B and mu_{iso}, by using the
Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model. The PNJL model with
the scalar-type eight-quark interaction can reproduce lattice QCD data at not
only mu_{iso}=mu_B=0 but also mu_{iso}>0 and mu_B=0. In the mu_{iso}-mu_{B}-T
space, where T is temperature, the critical endpoint of the chiral phase
transition in the mu_B-T plane at mu_{iso}=0 moves to the tricritical point of
the pion-superfluidity phase transition in the mu_{iso}-T plane at mu_B=0 as
mu_{iso} increases. The thermodynamics at small T is controlled by
sqrt{sigma^2+pi^2} defined by the chiral and pion condensates, sigma and pi.Comment: 13 pages, 24 figures, published version, references adde
ISO/EPC Addressing Methods to Support Supply Chain in the Internet of Things
RFID systems are among the major infrastructures of the Internet of Things,
which follow ISO and EPC standards. In addition, ISO standard constitutes the
main layers of supply chain, and many RFID systems benefit from ISO standard
for different purposes. In this paper, we tried to introduce addressing systems
based on ISO standards, through which the range of things connected to the
Internet of Things will grow. Our proposed methods are addressing methods which
can be applied to both ISO and EPC standards. The proposed methods are simple,
hierarchical, and low cost implementation. In addition, the presented methods
enhance interoperability among RFIDs, and also enjoys a high scalability, since
it well covers all of EPC schemes and ISO supply chain standards. Further, by
benefiting from a new algorithm for long EPCs known as selection algorithm,
they can significantly facilitate and accelerate the operation of address
mapping.Comment: arXiv admin note: text overlap with arXiv:1807.0217
The European Large Area ISO Survey - ISOPHOT results using the MPIA-pipeline
The European Large Area ISO Survey (ELAIS) will provide Infrared observations
of 4 regions in the sky with ISO. Around 2000 Infrared sources have been
detected at 7 and 15 microns (with ISOCAM), 90 and 175 microns (with ISOPHOT))
over 13 square degrees of the sky. We present the source extraction pipeline of
the 90 microns ISOPHOT observations, describe and discuss the results obtained
and derive the limits of the ELAIS observational strategy.Comment: 4 pages, 5 figures, to appear in the ISO conference "The Universe as
seen by ISO", 1998, UNESCO, Pari
- …
