7,161 research outputs found
Antenna and propagation studies for spacecraft task E-53F - An analysis of the ranging system for the lunar surface electral properties experiment
Analysis of ranging system for lunar surface electrical properties experimen
Apollo LM and CSM S-band antenna tracking studies. CSM-HGA interchangeability study antenna and RF circuitry analysis
Mathematical model for radio frequency circuitry of Apollo high gain antenna syste
Overlap Dirac operator at nonzero chemical potential and random matrix theory
We show how to introduce a quark chemical potential in the overlap Dirac
operator. The resulting operator satisfies a Ginsparg-Wilson relation and has
exact zero modes. It is no longer gamma_5-hermitian, but its nonreal
eigenvalues still occur in pairs. We compute the spectral density of the
operator on the lattice and show that, for small eigenvalues, the data agree
with analytical predictions of nonhermitian chiral random matrix theory for
both trivial and nontrivial topology.Comment: 4 pages, 2 figure
Frequency-Tunable Josephson Junction Resonator for Quantum Computing
We have fabricated and measured a high-Q Josephson junction resonator with a
tunable resonance frequency. A dc magnetic flux allows the resonance frequency
to be changed by over 10 %. Weak coupling to the environment allows a quality
factor of 7000 when on average less than one photon is stored in the
resonator. At large photon numbers, the nonlinearity of the Josephson junction
creates two stable oscillation states. This resonator can be used as a tool for
investigating the quality of Josephson junctions in qubits below the single
photon limit, and can be used as a microwave qubit readout at high photon
numbers.Comment: 3 pages, 5 figure
An experimental investigation of the hypergolic ignition of some polymeric fuels with oxygen
Hypergolic ignition of polymeric fuels with oxyge
- …