Aalborg Universitet Time Function and Absolute Black Hole Javadi, Hossein; Forouzbakhsh, Farshid
... universe, each one is a clock. Everything has a starting point in space with its lifetime. So, in general form everything is a space time. Our ideas about time come up of clocks. There is no time without a clock? Newton thought clock shows time, and there is a clock that shows absolute time in unive ...
... universe, each one is a clock. Everything has a starting point in space with its lifetime. So, in general form everything is a space time. Our ideas about time come up of clocks. There is no time without a clock? Newton thought clock shows time, and there is a clock that shows absolute time in unive ...
Single-exciton spectroscopy of single Mn doped InAs quantum dots
... electric-dipole operator14 that promotes an electron from the valence states to the conduction states and vice versa. This operator obeys the standard optical selection rules associated to the photon with polarization and does not affect the Mn spin state. Explicit expressions of this operator are ...
... electric-dipole operator14 that promotes an electron from the valence states to the conduction states and vice versa. This operator obeys the standard optical selection rules associated to the photon with polarization and does not affect the Mn spin state. Explicit expressions of this operator are ...
The Historical X-ray Transient KY TrA in quiescence
... locus. Under the hypothesis that the light of KY TrA is contaminated by an interloper, it should be located even higher in this diagram, with a larger H α excess. The source closest to KY TrA is unknown. ...
... locus. Under the hypothesis that the light of KY TrA is contaminated by an interloper, it should be located even higher in this diagram, with a larger H α excess. The source closest to KY TrA is unknown. ...
Daniel Adam Roberts - School of Natural Sciences
... states in a system and therefore the amount of information that it can represent. In more general physical systems, the different microstates may not be equally likely to occur. In that case, we can assign a probability pi to each microstate i, and the entropy is ...
... states in a system and therefore the amount of information that it can represent. In more general physical systems, the different microstates may not be equally likely to occur. In that case, we can assign a probability pi to each microstate i, and the entropy is ...
Holographic non-Fermi
... a relativistic conformal field theory (CFT). Nevertheless, the similarity of their low-energy behaviour to that of a strange metal is striking and may not be an accident. After all, the key to our ability to characterize many-body systems has often been universalities of low-energy physics among syst ...
... a relativistic conformal field theory (CFT). Nevertheless, the similarity of their low-energy behaviour to that of a strange metal is striking and may not be an accident. After all, the key to our ability to characterize many-body systems has often been universalities of low-energy physics among syst ...
neutron star
... • This spherical surface is known as the event horizon. • The radius of the event horizon is known as the Schwarzschild radius. ...
... • This spherical surface is known as the event horizon. • The radius of the event horizon is known as the Schwarzschild radius. ...
Fritz Hasenöhrl and E=mc2
... with perfectly reflecting walls behaves, if set in motion, as if it has a mass m given by m = 8V ε0 /3c2 , where V is the volume of the cavity, ε0 is the energy density at rest, and c is the velocity of light.” (For a more extensive discussion, see Boughn & Rothman 2011.) The overall impression is th ...
... with perfectly reflecting walls behaves, if set in motion, as if it has a mass m given by m = 8V ε0 /3c2 , where V is the volume of the cavity, ε0 is the energy density at rest, and c is the velocity of light.” (For a more extensive discussion, see Boughn & Rothman 2011.) The overall impression is th ...
generalized twist-deformed rindler space-times
... The two remaining Hopf structures corresponding to the twist factors (19) and (20) look similar to the coproducts (24) and (25). Of course, if parameter θ µν goes to zero and parameters κ, κ̂ and κ approach infinity, the above space-times and corresponding Hopf structures become undeformed. Besides, ...
... The two remaining Hopf structures corresponding to the twist factors (19) and (20) look similar to the coproducts (24) and (25). Of course, if parameter θ µν goes to zero and parameters κ, κ̂ and κ approach infinity, the above space-times and corresponding Hopf structures become undeformed. Besides, ...
Spacephysics - The summary
... confirmed by research in the future, here are some of them: a) Blue shift of the rim of the universe by the income of accretion masses from hyperspace (of the superordinated universe and physical quantity dimension) b) New attributes and phenomena of the various Bose-condensates (important to resear ...
... confirmed by research in the future, here are some of them: a) Blue shift of the rim of the universe by the income of accretion masses from hyperspace (of the superordinated universe and physical quantity dimension) b) New attributes and phenomena of the various Bose-condensates (important to resear ...
GiRaFFE: An Open-Source General Relativistic Force
... wave (GW) astronomy has arrived, and an exciting new window on the Universe has been opened. The prospect of multimessenger observations stemming from an observed gravitational wave source with coincident electromagnetic (EM) and/or neutrino signals promises to provide far deeper insights into the e ...
... wave (GW) astronomy has arrived, and an exciting new window on the Universe has been opened. The prospect of multimessenger observations stemming from an observed gravitational wave source with coincident electromagnetic (EM) and/or neutrino signals promises to provide far deeper insights into the e ...
Michell, Laplace and the Origin of the Black Hole Concept
... proportion to its vis inertiae, with other bodies, all light emitted from such a body would be made to return towards it, by its own proper gravity. (Michell, 1784: ...
... proportion to its vis inertiae, with other bodies, all light emitted from such a body would be made to return towards it, by its own proper gravity. (Michell, 1784: ...
Section 7 - LISA Science Team
... Gravitational waves provide our only chance to directly observe the Universe at its earliest times ...
... Gravitational waves provide our only chance to directly observe the Universe at its earliest times ...
Orbital period decay of compact black hole X
... detailed evolutionary sequences of a BHXB with an initial orbital period of 0.9 d, which consist of a 5.0 M BH and a 3.0 M donor star. The calculation shows that if the fraction of the transferred mass feeds into the circumbinary disk δ is greater than 0.00035, the mass transfer becomes dynamicall ...
... detailed evolutionary sequences of a BHXB with an initial orbital period of 0.9 d, which consist of a 5.0 M BH and a 3.0 M donor star. The calculation shows that if the fraction of the transferred mass feeds into the circumbinary disk δ is greater than 0.00035, the mass transfer becomes dynamicall ...
general relativity and gravitational waves
... When we draw spherical coordinates on a sphere, and follow two lines, that are perpendicular to the equation, in the direction of the North pole, we observe that two initial parallel lines meet at a point on the curved surface. The fifth postulate of Euclid does not hold for a curved space: parallel ...
... When we draw spherical coordinates on a sphere, and follow two lines, that are perpendicular to the equation, in the direction of the North pole, we observe that two initial parallel lines meet at a point on the curved surface. The fifth postulate of Euclid does not hold for a curved space: parallel ...
Black Hole Singularities in the Framework... Gauge/String Duality by Guido Nicola Innocenzo Festuccia
... * 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 singularity resulting from the evolution of a nonsin ...
... * 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 singularity resulting from the evolution of a nonsin ...
Atomistic description of wave function localization effects in InxGa1
... In this section we analyze the electronic structure of In0.25 Ga0.75 N/GaN QWs by means of our TB model. As a model system we assume a 3.5 nm thick In0.25 Ga0.75 N/GaN QW. All QW calculations have been performed on SCs containing ≈ 82,000 atoms (≈ 10nm × 9nm × 10nm) with periodic boundary conditions ...
... In this section we analyze the electronic structure of In0.25 Ga0.75 N/GaN QWs by means of our TB model. As a model system we assume a 3.5 nm thick In0.25 Ga0.75 N/GaN QW. All QW calculations have been performed on SCs containing ≈ 82,000 atoms (≈ 10nm × 9nm × 10nm) with periodic boundary conditions ...
Connecting Blackbody Radiation, Relativity, and Discrete Charge in
... charge all came to prominence at the beginning of the 20th century yet these were not connected. Thus at the same time that Lorentz invariance was recognized as a symmetry of electromagnetic waves, the interaction of radiation and matter was treated by nonrelativistic mechanics for particles of arbi ...
... charge all came to prominence at the beginning of the 20th century yet these were not connected. Thus at the same time that Lorentz invariance was recognized as a symmetry of electromagnetic waves, the interaction of radiation and matter was treated by nonrelativistic mechanics for particles of arbi ...
Resolving the Structure of Black Holes: Philosophizing with a Hammer
... both have black-hole-like throats that cap off at a length of order N1 N5 to some power, and the different structures of the cap are therefore the cause of the differences in the vev’s. However if one includes quantum effects in the calculation of these vev’s one also obtains effects of this order, ...
... both have black-hole-like throats that cap off at a length of order N1 N5 to some power, and the different structures of the cap are therefore the cause of the differences in the vev’s. However if one includes quantum effects in the calculation of these vev’s one also obtains effects of this order, ...
Merger of binary neutron stars with realistic equations of state in full
... in the merger of binary neutron stars can be taken into account within 1% error in an appropriate computational ...
... in the merger of binary neutron stars can be taken into account within 1% error in an appropriate computational ...
The Theory of Everything: The Origin and Fate of the Universe
... In the third lecture I shall talk about black holes. These are formed when a massive star or an even larger body collapses in on itself under its own gravitational pull. According to Einstein’s general theory of relativity, anyone foolish enough to fall into a black hole will be lost forever. They w ...
... In the third lecture I shall talk about black holes. These are formed when a massive star or an even larger body collapses in on itself under its own gravitational pull. According to Einstein’s general theory of relativity, anyone foolish enough to fall into a black hole will be lost forever. They w ...
Hawking radiation
Hawking radiation is black body radiation that is predicted to be released by black holes, due to quantum effects near the event horizon. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after Jacob Bekenstein, who predicted that black holes should have a finite, non-zero temperature and entropy.Hawking's work followed his visit to Moscow in 1973 where the Soviet scientists Yakov Zeldovich and Alexei Starobinsky showed him that, according to the quantum mechanical uncertainty principle, rotating black holes should create and emit particles. Hawking radiation reduces the mass and energy of black holes and is therefore also known as black hole evaporation. Because of this, black holes that lose more mass than they gain through other means are expected to shrink and ultimately vanish. Micro black holes are predicted to be larger net emitters of radiation than larger black holes and should shrink and dissipate faster.In September 2010, a signal that is closely related to black hole Hawking radiation (see analog gravity) was claimed to have been observed in a laboratory experiment involving optical light pulses. However, the results remain unverified and debatable. Other projects have been launched to look for this radiation within the framework of analog gravity. In June 2008, NASA launched the Fermi space telescope, which is searching for the terminal gamma-ray flashes expected from evaporating primordial black holes. In the event that speculative large extra dimension theories are correct, CERN's Large Hadron Collider may be able to create micro black holes and observe their evaporation.