Direct Observation of Second Order Atom
... smaller than the tunnel matrix element J (J/U~1.5, Fig. 2a and b), tunnelling of a single atom out of a pair is only slightly detuned. This process therefore competes with the resonant second order tunnel process, leading to a signal containing more than one frequency component (see Fig. 2b). When r ...
... smaller than the tunnel matrix element J (J/U~1.5, Fig. 2a and b), tunnelling of a single atom out of a pair is only slightly detuned. This process therefore competes with the resonant second order tunnel process, leading to a signal containing more than one frequency component (see Fig. 2b). When r ...
Black Hole Singularities in the Framework... Gauge/String Duality by Guido Nicola Innocenzo Festuccia
... reasonable source satisfies this condition2 * Also some global structure on the spacetime is imposed like the absence of closed time-like curves. * The final requirement is that gravity must be strong enough to trap a region as happens if a spatial cross section of space-time is closed. The singula ...
... reasonable source satisfies this condition2 * Also some global structure on the spacetime is imposed like the absence of closed time-like curves. * The final requirement is that gravity must be strong enough to trap a region as happens if a spatial cross section of space-time is closed. The singula ...
Reflection symmetric ballistic microstructures
... Because conductance is related to scattering from the system, the symmetry classes for quantum transport are closely related to those for the scattering matrix S. It has been shown5–8 that ensembles in which S is distributed with an ‘‘equal a priori probability’’ across the available matrix space pr ...
... Because conductance is related to scattering from the system, the symmetry classes for quantum transport are closely related to those for the scattering matrix S. It has been shown5–8 that ensembles in which S is distributed with an ‘‘equal a priori probability’’ across the available matrix space pr ...
Eikonal Approximation K. V. Shajesh
... used for studying low energy processes. In quantum field theories involving coupling constants smaller than one we use the standard weak-coupling perturbation series which is parallel in its approach to the Born approximation in quantum mechanics. In the 1950’s and 1960’s when high energy physics wa ...
... used for studying low energy processes. In quantum field theories involving coupling constants smaller than one we use the standard weak-coupling perturbation series which is parallel in its approach to the Born approximation in quantum mechanics. In the 1950’s and 1960’s when high energy physics wa ...
File
... sky is blue, why radio waves travel through empty space and how a satellite stays in orbit? You can not find the answers without first understanding the basic laws of physics. ...
... sky is blue, why radio waves travel through empty space and how a satellite stays in orbit? You can not find the answers without first understanding the basic laws of physics. ...
Near-Optimal Dynamical Decoupling of a Qubit
... Figure 2 shows QDDn performance as a function of J, the system-bath coupling strength. As JS2n approaches 1, the qubit decoheres so rapidly that DD has essentially no effect, and the distance between the initial and final states approaches its maximum of 1. Again, the n ¼ 0 line represents undecou ...
... Figure 2 shows QDDn performance as a function of J, the system-bath coupling strength. As JS2n approaches 1, the qubit decoheres so rapidly that DD has essentially no effect, and the distance between the initial and final states approaches its maximum of 1. Again, the n ¼ 0 line represents undecou ...
Density instabilities in multi-layer dipolar Fermi gases
... Extraordinary progresses in physics and technology of the last years have stimulated the investigation in ultracold gases, and in turn, the investigation has enhanced technology in this sense. In particular, experimental success in trapping and cooling polar atoms and molecules has attracted huge in ...
... Extraordinary progresses in physics and technology of the last years have stimulated the investigation in ultracold gases, and in turn, the investigation has enhanced technology in this sense. In particular, experimental success in trapping and cooling polar atoms and molecules has attracted huge in ...
Earman, John, "Aspects of Determinism in Modern Physics"
... value at every moment of time; call these the occurrent magnitudes. Other physical magnitudes may be dispositional in character and may take on determinate values only in appropriate contexts; but it was assumed that these dispositional magnitudes supervene on the nondispositional magnitudes.2 A his ...
... value at every moment of time; call these the occurrent magnitudes. Other physical magnitudes may be dispositional in character and may take on determinate values only in appropriate contexts; but it was assumed that these dispositional magnitudes supervene on the nondispositional magnitudes.2 A his ...
Spin transport through nanostructures B. K ,
... [5, 6] were important steps for achieving such a goal. The standard way to generate a spin-polarized current is to inject electrons into a semiconductor from a ferromagnet [7], where it can be subsequently influenced by gate voltages. This is not very efficient due to scattering at the interface. Th ...
... [5, 6] were important steps for achieving such a goal. The standard way to generate a spin-polarized current is to inject electrons into a semiconductor from a ferromagnet [7], where it can be subsequently influenced by gate voltages. This is not very efficient due to scattering at the interface. Th ...
Landau Levels in Graphene - Department of Theoretical Physics
... Graphene is certainly a rising star in material science, which recently brought Nobel Prize to Andre Geim and Konstantin Novoselov for fabrication, identification and characterization of it. The reason why this was not done before the year of 2004 is in its structure. It is a 2D mono-atomic crystal, ...
... Graphene is certainly a rising star in material science, which recently brought Nobel Prize to Andre Geim and Konstantin Novoselov for fabrication, identification and characterization of it. The reason why this was not done before the year of 2004 is in its structure. It is a 2D mono-atomic crystal, ...
Quantum computing: An IBM perspective
... thin, i.e., about 2 nm, in thickness. The energy expression for a single Josephson junction goes like I0 cosðÞ, where I0 is the critical current, i.e., an intrinsic property of the Josephson junction. Note that this expression is harmonic for small but becomes highly anharmonic for large . Beca ...
... thin, i.e., about 2 nm, in thickness. The energy expression for a single Josephson junction goes like I0 cosðÞ, where I0 is the critical current, i.e., an intrinsic property of the Josephson junction. Note that this expression is harmonic for small but becomes highly anharmonic for large . Beca ...
107, 195303 (2011)
... be clearly seen in Fig. 1, where we plot the change of and with respect to ¼ 1=KF as for different parameters (KF , ) at T ¼ 0. In the BEC side, the SOC strength KF and the Zeeman field do not have a significant influence on because all fermion atoms form bound molecules. Hence we mainl ...
... be clearly seen in Fig. 1, where we plot the change of and with respect to ¼ 1=KF as for different parameters (KF , ) at T ¼ 0. In the BEC side, the SOC strength KF and the Zeeman field do not have a significant influence on because all fermion atoms form bound molecules. Hence we mainl ...
Introduction: 100 years of Brownian motion - Physik Uni
... its roots in the diffusive nature of the trajectories of a Brownian walker in continuous time: The Feynman–Kac propagator is nothing but a Schrödinger equation in imaginary time. In diffusion theory this idea had been utilized as early as in 1953 by Onsager and Machlup29 for Gauss–Markov processes w ...
... its roots in the diffusive nature of the trajectories of a Brownian walker in continuous time: The Feynman–Kac propagator is nothing but a Schrödinger equation in imaginary time. In diffusion theory this idea had been utilized as early as in 1953 by Onsager and Machlup29 for Gauss–Markov processes w ...
2013 HKDSE PHYSICS Paper 1A Suggested Solutions
... equilibrium (Resultant Force = Zero) and rotational equilibrium (Resultant Torque = Zero) are achieved. Therefore, the weight and the tension should be acting along the same line of force to make the resultant torque become zero. Therefore, statement 2 is correct. 3. The reading of the balance is on ...
... equilibrium (Resultant Force = Zero) and rotational equilibrium (Resultant Torque = Zero) are achieved. Therefore, the weight and the tension should be acting along the same line of force to make the resultant torque become zero. Therefore, statement 2 is correct. 3. The reading of the balance is on ...
computing
... second one the number 7. In general three physical bits can be prepared in 23 = 8 different configurations that can represent, for example, the integers from 0 to 7. However, a register composed of three classical bits can store only one number at a given moment of time. Enter qubits and quantum reg ...
... second one the number 7. In general three physical bits can be prepared in 23 = 8 different configurations that can represent, for example, the integers from 0 to 7. However, a register composed of three classical bits can store only one number at a given moment of time. Enter qubits and quantum reg ...
- Philsci
... and W2 = j cjj cjj* wj wj*. W1, W2 are improper mixtures, found by derivation from the composite state W1+2. Let us now assume that subsystem S1 (S2) is really in one of the states vi (wj) with probabilities cii2 (cjj2). The state of the combined system can then be reconstructed, in the manner ...
... and W2 = j cjj cjj* wj wj*. W1, W2 are improper mixtures, found by derivation from the composite state W1+2. Let us now assume that subsystem S1 (S2) is really in one of the states vi (wj) with probabilities cii2 (cjj2). The state of the combined system can then be reconstructed, in the manner ...
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.