Are mirror worlds opaque?

... though Rx . The quantity λ (which we need to evaluate at r ≈ Rp ) should be dominated by the temperature profile in the outer regions (r > 0.6Rp ) where the conditions should not be so different from the temperature profile computed for close-in giant planets made from ordinary matter. This suggests ...

... though Rx . The quantity λ (which we need to evaluate at r ≈ Rp ) should be dominated by the temperature profile in the outer regions (r > 0.6Rp ) where the conditions should not be so different from the temperature profile computed for close-in giant planets made from ordinary matter. This suggests ...

SCIENTIFIC ACHIEVEMENTS OF VLADIMIR GRIBOV LN Lipatov

... After publishing the papers devoted to deep inelastic scattering V. Gribov began to work on more fundamental problems of QCD which were beyond the applicability of perturbation theory. He discovered the important property of nonabelian gauge theories which is known as ”Gribov’s ambiguities” Nucl. P ...

... After publishing the papers devoted to deep inelastic scattering V. Gribov began to work on more fundamental problems of QCD which were beyond the applicability of perturbation theory. He discovered the important property of nonabelian gauge theories which is known as ”Gribov’s ambiguities” Nucl. P ...

Relativistic Quantum Information: developments in Quantum

... being complete. General relativity allows ill-defined objects such as singularities, and in the presence of a singularity it loses its predictive power. These problems are strongly related with the classicality of the theory: general relativity is classical and close to a singularity the energies an ...

... being complete. General relativity allows ill-defined objects such as singularities, and in the presence of a singularity it loses its predictive power. These problems are strongly related with the classicality of the theory: general relativity is classical and close to a singularity the energies an ...

as a PDF

... 2.1.1 General mechanisms for superconductivity . . . . . . . . . . . . . . . . . . . . . 2.1.2 Bio-structures as defect regions or large ~ regions of quantum critical superconductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.3 Superconductivity at magnetic f ...

... 2.1.1 General mechanisms for superconductivity . . . . . . . . . . . . . . . . . . . . . 2.1.2 Bio-structures as defect regions or large ~ regions of quantum critical superconductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.3 Superconductivity at magnetic f ...

Second Order QED Processes in an Intense

... the program of renormalisation was developed [Tom46, Tea47, Tom48, Sch48a, Sch48b]. In this view wave functions develop from one space-like surface to another resulting in equations which are covariant at each stage of calculation. This is known as the proper time method. The second reformulation of ...

... the program of renormalisation was developed [Tom46, Tea47, Tom48, Sch48a, Sch48b]. In this view wave functions develop from one space-like surface to another resulting in equations which are covariant at each stage of calculation. This is known as the proper time method. The second reformulation of ...

Production and evolution of axion dark matter in the early universe

... when it was proposed. In the original model, the axion was “visible” in the sense that it gives some predictions for laboratory experiments. Unfortunately, no signature was observed, and the prototype axion model was ruled out soon after the proposal [15]. However, it was argued that models with hig ...

... when it was proposed. In the original model, the axion was “visible” in the sense that it gives some predictions for laboratory experiments. Unfortunately, no signature was observed, and the prototype axion model was ruled out soon after the proposal [15]. However, it was argued that models with hig ...

Phonons and related crystal properties from density

... that it is possible to calculate the lattice-dynamical properties of specific systems. The state of the art of theoretical condensed-matter physics and of computational materials science is such that it is nowadays possible to calculate specific properties of specific (simple) materials using ab ini ...

... that it is possible to calculate the lattice-dynamical properties of specific systems. The state of the art of theoretical condensed-matter physics and of computational materials science is such that it is nowadays possible to calculate specific properties of specific (simple) materials using ab ini ...

Topology and geometry in a quantum condensed matter system

... Following this analogy, the topological classification of general gapped many-body states of matter may be used to describe the subclass of states that can be described by the band theory of solids. The shape of the band structure and how the energy bands are knotted defines topological invariants c ...

... Following this analogy, the topological classification of general gapped many-body states of matter may be used to describe the subclass of states that can be described by the band theory of solids. The shape of the band structure and how the energy bands are knotted defines topological invariants c ...

Instructor Solutions Manual for Physics by Halliday, Resnick, and

... server access must be restricted to your students. I have been somewhat casual about subscripts whenever it is obvious that a problem is one dimensional, or that the choice of the coordinate system is irrelevant to the numerical solution. Although this does not change the validity of the answer, it ...

... server access must be restricted to your students. I have been somewhat casual about subscripts whenever it is obvious that a problem is one dimensional, or that the choice of the coordinate system is irrelevant to the numerical solution. Although this does not change the validity of the answer, it ...

Chapter 25: Capacitance - Farmingdale State College

... Chapter 25 Capacitance The integral !dA represents the sum of all the elements of area dA, and that sum is just equal to the total area of the cylindrical surface. As we showed in section 4.6, the total area of the cylindrical surface can be found by unfolding the cylindrical surface. One length of ...

... Chapter 25 Capacitance The integral !dA represents the sum of all the elements of area dA, and that sum is just equal to the total area of the cylindrical surface. As we showed in section 4.6, the total area of the cylindrical surface can be found by unfolding the cylindrical surface. One length of ...

EPR Resonators

... absorption of microwaves increases r. The Q of the cavity therefore drops, thereby decreasing the sensitivity of the spectrometer. The increased value of r also makes it more difficult to match the cavity. A larger n, the turns ratio in the equivalent circuit, is required to match the cavity. The la ...

... absorption of microwaves increases r. The Q of the cavity therefore drops, thereby decreasing the sensitivity of the spectrometer. The increased value of r also makes it more difficult to match the cavity. A larger n, the turns ratio in the equivalent circuit, is required to match the cavity. The la ...

Classical and quantum dynamics of optical frequency conversion

... support. I’d also like to thank Chris and Gretchen Ekstrom, who kindly invited me into their family (and let me watch Simpson’s videos!) which made me feel more at home than I would have thought possible. The PhD is the last vestige of the apprenticeship system: nowhere else can one find such a clos ...

... support. I’d also like to thank Chris and Gretchen Ekstrom, who kindly invited me into their family (and let me watch Simpson’s videos!) which made me feel more at home than I would have thought possible. The PhD is the last vestige of the apprenticeship system: nowhere else can one find such a clos ...

In quantum field theory, the Casimir effect and the Casimir–Polder force are physical forces arising from a quantized field. They are named after the Dutch physicist Hendrik Casimir.The typical example is of two uncharged metallic plates in a vacuum, placed a few nanometers apart. In a classical description, the lack of an external field means that there is no field between the plates, and no force would be measured between them. When this field is instead studied using the QED vacuum of quantum electrodynamics, it is seen that the plates do affect the virtual photons which constitute the field, and generate a net force—either an attraction or a repulsion depending on the specific arrangement of the two plates. Although the Casimir effect can be expressed in terms of virtual particles interacting with the objects, it is best described and more easily calculated in terms of the zero-point energy of a quantized field in the intervening space between the objects. This force has been measured and is a striking example of an effect captured formally by second quantization. However, the treatment of boundary conditions in these calculations has led to some controversy.In fact, ""Casimir's original goal was to compute the van der Waals force between polarizable molecules"" of the metallic plates. Thus it can be interpreted without any reference to the zero-point energy (vacuum energy) of quantum fields.Dutch physicists Hendrik B. G. Casimir and Dirk Polder at Philips Research Labs proposed the existence of a force between two polarizable atoms and between such an atom and a conducting plate in 1947, and, after a conversation with Niels Bohr who suggested it had something to do with zero-point energy, Casimir alone formulated the theory predicting a force between neutral conducting plates in 1948; the former is called the Casimir–Polder force while the latter is the Casimir effect in the narrow sense. Predictions of the force were later extended to finite-conductivity metals and dielectrics by Lifshitz and his students, and recent calculations have considered more general geometries. It was not until 1997, however, that a direct experiment, by S. Lamoreaux, described above, quantitatively measured the force (to within 15% of the value predicted by the theory), although previous work [e.g. van Blockland and Overbeek (1978)] had observed the force qualitatively, and indirect validation of the predicted Casimir energy had been made by measuring the thickness of liquid helium films by Sabisky and Anderson in 1972. Subsequent experiments approach an accuracy of a few percent.Because the strength of the force falls off rapidly with distance, it is measurable only when the distance between the objects is extremely small. On a submicron scale, this force becomes so strong that it becomes the dominant force between uncharged conductors. In fact, at separations of 10 nm—about 100 times the typical size of an atom—the Casimir effect produces the equivalent of about 1 atmosphere of pressure (the precise value depending on surface geometry and other factors).In modern theoretical physics, the Casimir effect plays an important role in the chiral bag model of the nucleon; in applied physics, it is significant in some aspects of emerging microtechnologies and nanotechnologies.Any medium supporting oscillations has an analogue of the Casimir effect. For example, beads on a string as well as plates submerged in noisy water or gas illustrate the Casimir force.