Casimir effects in systems containing 2D gases B E Sernelius
... over the discrete k variable can be replaced by an integral over a continuous k variable. In a simple system with a small number of well-defined modes this summation may be performed directly. In most cases it is more complicated. The complications can e.g. be that the modes form continua or that it ...
... over the discrete k variable can be replaced by an integral over a continuous k variable. In a simple system with a small number of well-defined modes this summation may be performed directly. In most cases it is more complicated. The complications can e.g. be that the modes form continua or that it ...
Midgap states of a two-dimensional antiferromagnetic Mott
... Doped Mott insulators [1] consisting of spin- 12 local moments exhibit a host of unconventional electronic, magnetic and optical properties [2]. These include non-Fermi- liquid transport behaviour of the metallic state, quantum spin-liquid correlations in the local moment background, and anomalous o ...
... Doped Mott insulators [1] consisting of spin- 12 local moments exhibit a host of unconventional electronic, magnetic and optical properties [2]. These include non-Fermi- liquid transport behaviour of the metallic state, quantum spin-liquid correlations in the local moment background, and anomalous o ...
Parity Violation in Chiral Molecules
... infrared spectroscopy goes back 30 years [49] and since that time a number of proposals were made and some experiments were carried out in the infrared [49–53], microwave [53] and γ-ray (Mössbauer) spectral ranges [54]. Experiments reached accuracies Δν/ν from 10–6 in 1976 to 10–14 recently [51][52] ...
... infrared spectroscopy goes back 30 years [49] and since that time a number of proposals were made and some experiments were carried out in the infrared [49–53], microwave [53] and γ-ray (Mössbauer) spectral ranges [54]. Experiments reached accuracies Δν/ν from 10–6 in 1976 to 10–14 recently [51][52] ...
Electronic structure methods
... electron, only a set of many-electron solutions which cannot be calculated exactly[4] (although there are mathematical approximations available, such as the Hartree–Fock method). The fact that the Aufbau principle is based on an approximation can be seen from the fact that there is an almost-fixed f ...
... electron, only a set of many-electron solutions which cannot be calculated exactly[4] (although there are mathematical approximations available, such as the Hartree–Fock method). The fact that the Aufbau principle is based on an approximation can be seen from the fact that there is an almost-fixed f ...
Reflections on Friction in Quantum Mechanics
... density to higher states, so that we can only reach a higher (or equal) energy compared to the quasistatic change. Thus we receive a “resistance” to velocity: when we strive to drive the system quickly we need to invest more work. This process, by itself, is reversible. Simply reversing the field-ch ...
... density to higher states, so that we can only reach a higher (or equal) energy compared to the quasistatic change. Thus we receive a “resistance” to velocity: when we strive to drive the system quickly we need to invest more work. This process, by itself, is reversible. Simply reversing the field-ch ...
THE HISTORY OF FRET: From conception through the labors of birth
... for FRET, which was then carried out by Maxwell. 1.2.3. Renaissance: Enter the Theory of Electrodynamics and Fields The basic FRET phenomenon involves the electrodynamic interaction between two molecules over distances that are large compared to their diameters; and this description requires the ide ...
... for FRET, which was then carried out by Maxwell. 1.2.3. Renaissance: Enter the Theory of Electrodynamics and Fields The basic FRET phenomenon involves the electrodynamic interaction between two molecules over distances that are large compared to their diameters; and this description requires the ide ...
Quantum Computing
... The main issue that one must contend with when they try to build a quantum computer is how to make a Qbit. The majority of problems dealing with quantum hardware involve creating and maintaining a Qbit. There are many different ways a Qbit can be created, and the only real restriction is that you ne ...
... The main issue that one must contend with when they try to build a quantum computer is how to make a Qbit. The majority of problems dealing with quantum hardware involve creating and maintaining a Qbit. There are many different ways a Qbit can be created, and the only real restriction is that you ne ...
Research Statement
... have now performed demonstrations of small-scale BosonSampling experiments [12, 13, 14, 15, ...
... have now performed demonstrations of small-scale BosonSampling experiments [12, 13, 14, 15, ...
Estimation of pump-out and positive radial electric field created by
... Another approach, which includes an approximated geometry and diffusion coefficient, has been recently developed in Ref. 10. We define the loss cone as the region in momentum space where all particles pushed away from thermal equilibrium are lost quickly. In this work, such region is considered to b ...
... Another approach, which includes an approximated geometry and diffusion coefficient, has been recently developed in Ref. 10. We define the loss cone as the region in momentum space where all particles pushed away from thermal equilibrium are lost quickly. In this work, such region is considered to b ...
Renormalization
In quantum field theory, the statistical mechanics of fields, and the theory of self-similar geometric structures, renormalization is any of a collection of techniques used to treat infinities arising in calculated quantities.Renormalization specifies relationships between parameters in the theory when the parameters describing large distance scales differ from the parameters describing small distances. Physically, the pileup of contributions from an infinity of scales involved in a problem may then result in infinities. When describing space and time as a continuum, certain statistical and quantum mechanical constructions are ill defined. To define them, this continuum limit, the removal of the ""construction scaffolding"" of lattices at various scales, has to be taken carefully, as detailed below.Renormalization was first developed in quantum electrodynamics (QED) to make sense of infinite integrals in perturbation theory. Initially viewed as a suspect provisional procedure even by some of its originators, renormalization eventually was embraced as an important and self-consistent actual mechanism of scale physics in several fields of physics and mathematics. Today, the point of view has shifted: on the basis of the breakthrough renormalization group insights of Kenneth Wilson, the focus is on variation of physical quantities across contiguous scales, while distant scales are related to each other through ""effective"" descriptions. All scales are linked in a broadly systematic way, and the actual physics pertinent to each is extracted with the suitable specific computational techniques appropriate for each.