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Article
Renormalization of Competing Interactions and Superconductivity on Small Scales
The interaction-induced orbital magnetic response of a nanoscale ring is evaluated for a diffusive system which is a superconductor in the bulk. The interplay of the renormalized Coulomb and Fröhlich interacti...
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Chapter
Decoherence in Disordered Conductors at Low Temperatures: The Effect of Soft Local Excitations
The conduction electrons’ dephasing rate, τ φ −1 , is expected to vanish with the temperature. A very intriguing apparent saturation of...
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Book and Conference Proceedings
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Chapter
What Quantity is Measured in an Excess Noise Experiment?
Consider a measurement in which the current coming out of a mesoscopic sample is filtered around a frequency Ω > 0, then amplified, measured, squared, then this process is repeated many times and the results a...
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Article
The Fano Effect in Aharonov-Bohm Interferometers
After briefly reviewing the Fano effect, we explain why it may be relevant to various types of Aharonov–Bohm interferometers. We discuss both closed (electron conserving) and open interferometers, in which one...
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Chapter and Conference Paper
On the Detection of Quantum Noise and Low-Temperature Dephasing
We discuss the detection of quantum fluctuations in the light of the general van Hove - type relationship between time-dependent correlators and measurable properties. Considering the interaction between the f...
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Chapter
Coulomb Blockade in Quantum Dots with Overlap** Resonances: Towards an Explanation of the Phase Behaviour in the Mesoscopic Double-Slit Experiment
Coulomb blockade (CB) in a quantum dot (QD) with one anomalously broad level is considered. In this case many consecutive pronounced CB peaks correspond to occupation of one and the same broad level. Between t...
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Chapter
Dephasing and Shot-Noise in Mesoscopic Systems
The general principles of dephasing of quantum-mechanical interference by coupling to the environment degrees of freedom are summarized. A general expression for the dephasing rate is obtained and used to rede...
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Chapter and Conference Paper
Spectral Correlations, Symmetry Breaking and Novel Orbital Magnetic Effects in Mesoscopics
The quasiclassical picture yielding the correlations in the spectrum of an electron diffusing in a mesoscopic “quantum dot” is reviewed. This includes the range where random-matrix theory holds as well as the ...
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Chapter and Conference Paper
Chaos and Solitons in Josephson Junctions
The Josephson point junction [1–4], whose simplest description is by the RSJ pendulum — like equation [5–6], is a simple nonlinear system with a single degree of freedom, which displays a variety of interestin...
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Chapter and Conference Paper
Dielectric and Optical Anomalies Near the Anderson Metal-Insulator Transition
The linear response expressions for the dielectric constant and conductivity as functions of wave number and frequency are evaluated near the localization metal-insulator transition for noninteracting quasipar...
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Chapter and Conference Paper
The Quantized Hall Effect and Other Macroscopic Quantum Phenomena
The relation between the quantized Hall conductance and other macroscopic quantum effects is discussed. Under the appropriate conditions, fluxoid quantization and a phenomenon similar to the AC Josephson effec...
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Chapter and Conference Paper
Solitary Phenomena in Finite Dissipative Discrete Systems
Idealized nonlinear systems which are assumed to be infinite, continuous and nondissipative are well known to exhibit a variety of solitary-wave phenomena [1]. For example, the space-time dependence of the rel...
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Chapter
Critical Properties of a Simple Spin Glass Model
The spin glass state and the phase transitions into it have recently drawn much theoretical attention (1–9). In this phase the magnetic moments are supposed to be frozen but pointing in random directions, due ...
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Article
On the possibility of Bose-Einstein condensation in a solid
We treat the question of the existence of Bose-Einstein condensation (BEC) in Bose lattice systems. Simple examples are constructed that do display BEC while having a lattice symmetry. It is suggested, however...
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Article
Fluctuation-induced conductivity above the critical temperature in small-particle arrays
Small tin particle arrays show a component of conductivity above the critical temperature that can be described by an Aslamasov-Larkin-type fluctuation-induced conductivity term Δσ0 in the zero-dimensional limit....
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Chapter
Fluctuations in a Small Superconducting Grain
In this paper we discuss the fluctuations of the order parameter in a single small superconducting grain. Besides the general interest in this problem,1,2 it also applies to an assembly of grains with negligible ...
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Chapter
Bose-Einstein Condensation in Two-Dimensional Systems
It is a well-known and accepted fact that two- and one-dimensional systems of bosons do not undergo Bose-Einstein condensation at any finite temperature.1 We would like to point out that while this is true when t...
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Article
On the pairing theory of the bose superfluid
In analogy to the BCS theory of superconductivity, a self-consistent pairing theory of the Bose superfluid is developed along lines closely resembling the original Bose pairing model of Valatin and Butler. A n...
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Chapter
The Detection of Atomic Tunneling in Solids
In this chapter we shall examine theoretically the interaction of a tunneling atom with external radiation. We shall be interested in emission, scattering, and absorption processes, the radiation being light, ...
