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Article
Optical and X-ray imaging analysis of chemical elements associated with microbial communities
We analyze the distribution of chemical elements in microbial communities from various hydrothermal ecosystems (the Kurile-Kamchatka volcanic belt, the Baikal rift zone) and various laboratory cultures by mean...
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Article
Generation and distillation of non-Gaussian entanglement from nonclassical photon statistics
With a product state of the form \({{\rho}_{\rm in} = {\rho}_{a} \otimes |0 \rangle_b {_b} \langle 0|}\) as input to ...
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Article
A measure of non-Gaussianity for quantum states
We propose a measure of non-Gaussianity for quantum states of a system of n oscillator modes. Our measure is based on the quasi-probability ...
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Article
Hamilton’s theory of turns revisited
We present a new approach to Hamilton’s theory of turns for the groups SO(3) and SU(2) which renders their properties, in particular their composition law, nearly trivial and immediately evident upon inspection. ...
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Article
The structure of states and maps in quantum theory
The structure of statistical state spaces in the classical and quantum theories are compared in an interesting and novel manner. Quantum state spaces and maps on them have rich convex structures arising from t...
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Article
Open AccessMeasurement of low-mass e + e − pair production in 1 and 2 A GeV C–C collision with HADES
HADES is a secondary generation experiment operated at GSI Darmstadt with the main goal to study dielectron production in proton, pion and heavy ion induced reactions. The first part of the HADES mission is to...
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Article
Dielectron spectroscopy at 1-2 AGeV with HADES⋆
The HADES spectrometer at GSI (Darmstadt) is investigating the e + e - pair production in p+p, p+A and A+A collisions. In t...
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Article
Ray space ‘Riccati’ evolution and geometric phases for N-level quantum systems
We present a simple derivation of the matrix Riccati equations governing the reduced dynamics as one descends from the group $$ \mathb...
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Article
Dilepton production in pp and CC collisions with HADES
e + e - production was studied using the High Acceptance DiElectron Spectrometer (HADES). In pp collisions at 2.2GeV kinetic beam energy, the exclu...
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Chapter and Conference Paper
Dilepton production in pp and CC collisions with HADES
e + e − production was studied using the High Acceptance DiElectron Spectrometer (HADES). In pp collisions at 2.2 GeV kinetic b...
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Article
Hamilton's Turns for the Lorentz Group
Hamilton in the course of his studies on quaternions came up with an elegant geometric picture for the group SU(2). In this picture the group elements are represented by “turns,” which are equivalence classes of ...
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Article
Wigner distributions for finite dimensional quantum systems: An algebraic approach
We discuss questions pertaining to the definition of ‘momentum’, ‘momentum space’, ‘phase space’ and ‘Wigner distributions’; for finite dimensional quantum systems. For such systems, where traditional concepts...
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Article
Geometric phase for mixed states: a differential geometric approach
A new definition and interpretation of the geometric phase for mixed state cyclic unitary evolution in quantum mechanics are presented. The pure state case is formulated in a framework involving three selected...
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Article
The KOSMA large-scale CO survey of clouds in the Galactic Molecular Ring
We present the status of the KOSMA large-scale observations of clouds in the Galactic Molecular Ring (GMR) in CO J=3-2, 2-1 and 13CO 2-1 following up on the BU-FCRAO 13CO 1-0 survey. The GMR is one of the promine...
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Chapter and Conference Paper
The BU-FCRAO Galactic Ring Survey
Using the SEQUOIA multi-pixel array receiver on the Five College Radio Astronomy Observatory (FCRAO) 14 m telescope, we are conducting a new molecular line survey of the inner Galaxy. The Boston University (BU...
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Chapter and Conference Paper
The Distribution of MSX Dark Clouds in the Inner Milky Way
Recent high resolution surveys with the ISO and MSX satellites have revealed a large number of Galactic clouds with significant extinction in the midinfrared. The infrared dark clouds are characterized by their h...
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Chapter and Conference Paper
The Bu-Fcrao Galactic Ring Survey
The Galactic Ring Survey (GRS) will be a new high resolution, sensitive map of the distribution of 13CO(1 → 0) emission in the Inner Milky Way. Technical details and GRS data can be found at www.bu.edu/grs/.
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Chapter and Conference Paper
The KOSMA Multi-line CO Survey of Clouds in the Galactic Molecular Ring
The Milky Way is known to be a spiral barred galaxy with a prominent ring between 4 and 7 kpc Galactocentric radius (Scoville & Solomon 1975; Clemens et al. 1988). Ring resonances occur frequently in barred sp...
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Chapter and Conference Paper
The Carbon Content in the Galactic CygnusX/DR21 Star Forming Region
Observations of Carbon bearing species are among the most important diagnostic probes of ongoing star formation. CO is a surrogate for H2 and is found in the vicinity of star formation sites. There, [CI] emission...
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Chapter
The KOSMA Large-Scale CO Survey of Clouds in the Galactic Molecular Ring
We present the Status of the KOSMA large-scale observations of clouds in the Galactic Molecular Ring (GMR) in CO J=3−2, 2–1 and 13CO 2−1 following up on the BU-FCRAO 13CO 1−0 survey. The GMR is one of the promine...
