Quantum simulations with cold trapped ions
... with individual quantum systems whose internal and external degrees of freedom can be controlled to a considerable degree by the experimenter. A strong motivation for early experiments with individual trapped ions arose from their potential use as frequency standards (e.g. Dehmelt (1981) and referen ...
... with individual quantum systems whose internal and external degrees of freedom can be controlled to a considerable degree by the experimenter. A strong motivation for early experiments with individual trapped ions arose from their potential use as frequency standards (e.g. Dehmelt (1981) and referen ...
72 063623 (2005) .
... for the fidelity of single initial coherent states, with a strong dependence of decaying rate on the location of the initial coherent states. The Gaussian decay may be followed by a power-law decay 1 / t with 艌 1 for the large time scale. However, after averaging over the whole phase space, we fi ...
... for the fidelity of single initial coherent states, with a strong dependence of decaying rate on the location of the initial coherent states. The Gaussian decay may be followed by a power-law decay 1 / t with 艌 1 for the large time scale. However, after averaging over the whole phase space, we fi ...
March 2002 Vol - Basarab Nicolescu
... macrophysical world. This means that two levels of Reality are different if, passing from one to another, there is a break of the laws and break of the fundamental concepts (as causality, for example). The discontinuity present in the quantum world is also present in the structure of the Levels of R ...
... macrophysical world. This means that two levels of Reality are different if, passing from one to another, there is a break of the laws and break of the fundamental concepts (as causality, for example). The discontinuity present in the quantum world is also present in the structure of the Levels of R ...
Coulomb-Blockade Oscillations in Semiconductor Nanostructures
... See. 4 is the effect of a magnetic field on the amplitude and position of the oscillations, from which detailed Information can be obtained on the one-electron energy spectrum of the quantum dot [32]. In this chapter we consider the Coulomb-blockade oscillations in zero magnetic field and in the int ...
... See. 4 is the effect of a magnetic field on the amplitude and position of the oscillations, from which detailed Information can be obtained on the one-electron energy spectrum of the quantum dot [32]. In this chapter we consider the Coulomb-blockade oscillations in zero magnetic field and in the int ...
Momentum
... on the halfback must have been directed leftward. If the halfback experienced a force of 800 N for 0.9 seconds, then we could say that the impulse was 720 N*s. This impulse would cause a momentum change of 720 kg*m/s. In a collision, the impulse experienced by an object is always equal to the moment ...
... on the halfback must have been directed leftward. If the halfback experienced a force of 800 N for 0.9 seconds, then we could say that the impulse was 720 N*s. This impulse would cause a momentum change of 720 kg*m/s. In a collision, the impulse experienced by an object is always equal to the moment ...
Spin squeezing and quantum correlations
... eigen states of S 2 and Sz with respect to any choice of the axis of quantization. We refer to such states as non-oriented. While an oriented state is characterized by a single direction, viz., the axis of quantization (specified by two real variables θ ; φ ) in the physical space, a non-oriented st ...
... eigen states of S 2 and Sz with respect to any choice of the axis of quantization. We refer to such states as non-oriented. While an oriented state is characterized by a single direction, viz., the axis of quantization (specified by two real variables θ ; φ ) in the physical space, a non-oriented st ...
9.1 Impulse - 9.2 Momentum and the Impulse Momentum Theorem
... The spines of a hedgehog obviously help protect it from predators. But they serve another function as well. If a hedgehog falls from a tree—a not uncommon occurrence—it simply rolls itself into a ball before it lands. Its thick spines then cushion the blow by increasing the time it takes for the ...
... The spines of a hedgehog obviously help protect it from predators. But they serve another function as well. If a hedgehog falls from a tree—a not uncommon occurrence—it simply rolls itself into a ball before it lands. Its thick spines then cushion the blow by increasing the time it takes for the ...
New Journal of Physics Quantum interference-induced stability of repulsively Lea F Santos
... previous results. We also discuss the stability of BPs against many-particle scattering in ideal atomic and spin chains. The presence of an atom on a lattice site in the BH model or of a flipped spin in the XXZ chain is generally referred to as an excitation. We consider one-dimensional systems wher ...
... previous results. We also discuss the stability of BPs against many-particle scattering in ideal atomic and spin chains. The presence of an atom on a lattice site in the BH model or of a flipped spin in the XXZ chain is generally referred to as an excitation. We consider one-dimensional systems wher ...
MATH 115 Test 1 (Sec: R
... • Find a cost function C(x) for the total cost of mowing x lawns. The cost function for mowing x lawns is: C(x) = 5 x + 300 ...
... • Find a cost function C(x) for the total cost of mowing x lawns. The cost function for mowing x lawns is: C(x) = 5 x + 300 ...
Finite-Volume Electromagnetic Corrections to the Masses of Mesons
... Lattice Quantum Chromodynamics (LQCD) has matured to the point where basic properties of the light hadrons are being calculated at the physical pion mass [1–5]. In some instances, the upand down-quark masses and quenched Quantum Electrodynamics (QED) have been included in an effort to precisely post ...
... Lattice Quantum Chromodynamics (LQCD) has matured to the point where basic properties of the light hadrons are being calculated at the physical pion mass [1–5]. In some instances, the upand down-quark masses and quenched Quantum Electrodynamics (QED) have been included in an effort to precisely post ...
iBios – Portal Project Integrative Toolbox Using Grid
... • Comparison of thermodynamical potentials with lattice results • Application: A strongly interacting gauge theory underlying QED? ...
... • Comparison of thermodynamical potentials with lattice results • Application: A strongly interacting gauge theory underlying QED? ...
Chapter 7. Statistical Mechanics
... constituent molecules. Instead, the powerful tools of statistical mechanics allow one to focus on quantities that describe the most important features of the many-molecule system. In this Chapter, you will learn about these tools and see some important examples of their application. ...
... constituent molecules. Instead, the powerful tools of statistical mechanics allow one to focus on quantities that describe the most important features of the many-molecule system. In this Chapter, you will learn about these tools and see some important examples of their application. ...
Statistical Physics of Spin Glasses and Information
... explain its mean-field treatment, a very useful technique of analysis of manybody systems by statistical mechanics. Mean-field theory explained here forms the basis of the methods used repeatedly throughout this book. The arguments in the present chapter represent a general mean-field theory of phase t ...
... explain its mean-field treatment, a very useful technique of analysis of manybody systems by statistical mechanics. Mean-field theory explained here forms the basis of the methods used repeatedly throughout this book. The arguments in the present chapter represent a general mean-field theory of phase t ...
Quantum Hall Effects and Related Topics International Symposium
... the mass of electrons are effectively changed. In a strong magnetic field, the cyclotron orbits of free electrons are quantized and Landau levels forms with a massive degeneracy within. In 1976, Hofstadter showed that for 2-dimensional electronic system, the intriguing interplay between these two quan ...
... the mass of electrons are effectively changed. In a strong magnetic field, the cyclotron orbits of free electrons are quantized and Landau levels forms with a massive degeneracy within. In 1976, Hofstadter showed that for 2-dimensional electronic system, the intriguing interplay between these two quan ...
Light shining through walls
... extra dimensions are shrunk into our three dimensional world. This process is called compactification. There are many ways of compactifying string theory (this research field is very lively) and the outcome can be very different. However, it seems to be a common feature of realistic compactification ...
... extra dimensions are shrunk into our three dimensional world. This process is called compactification. There are many ways of compactifying string theory (this research field is very lively) and the outcome can be very different. However, it seems to be a common feature of realistic compactification ...
Renormalization group
In theoretical physics, the renormalization group (RG) refers to a mathematical apparatus that allows systematic investigation of the changes of a physical system as viewed at different distance scales. In particle physics, it reflects the changes in the underlying force laws (codified in a quantum field theory) as the energy scale at which physical processes occur varies, energy/momentum and resolution distance scales being effectively conjugate under the uncertainty principle (cf. Compton wavelength).A change in scale is called a ""scale transformation"". The renormalization group is intimately related to ""scale invariance"" and ""conformal invariance"", symmetries in which a system appears the same at all scales (so-called self-similarity). (However, note that scale transformations are included in conformal transformations, in general: the latter including additional symmetry generators associated with special conformal transformations.)As the scale varies, it is as if one is changing the magnifying power of a notional microscope viewing the system. In so-called renormalizable theories, the system at one scale will generally be seen to consist of self-similar copies of itself when viewed at a smaller scale, with different parameters describing the components of the system. The components, or fundamental variables, may relate to atoms, elementary particles, atomic spins, etc. The parameters of the theory typically describe the interactions of the components. These may be variable ""couplings"" which measure the strength of various forces, or mass parameters themselves. The components themselves may appear to be composed of more of the self-same components as one goes to shorter distances.For example, in quantum electrodynamics (QED), an electron appears to be composed of electrons, positrons (anti-electrons) and photons, as one views it at higher resolution, at very short distances. The electron at such short distances has a slightly different electric charge than does the ""dressed electron"" seen at large distances, and this change, or ""running,"" in the value of the electric charge is determined by the renormalization group equation.