Our Universe—Infinite and Eternal: Its Physics
... This chapter presents physical ideas grounded in the observed isotropic homogeneous nature of the Universe that lead to the conclusion that the Universe might be infinite. Following this possibility, three metrics for an infinite, static, isotropic, and homogeneous universe are found, which satisfy th ...
... This chapter presents physical ideas grounded in the observed isotropic homogeneous nature of the Universe that lead to the conclusion that the Universe might be infinite. Following this possibility, three metrics for an infinite, static, isotropic, and homogeneous universe are found, which satisfy th ...
beyond the light barrier
... Because subluminal and superluminal spaces have c as an asymptotic boundary, there are fundamental similarities between them that can be defined through Einstein’s and Minkowski’s work on mass, gravity, light, and time. Since their work has been experimentally proven in sublight space, variations on ...
... Because subluminal and superluminal spaces have c as an asymptotic boundary, there are fundamental similarities between them that can be defined through Einstein’s and Minkowski’s work on mass, gravity, light, and time. Since their work has been experimentally proven in sublight space, variations on ...
Einstein static universe in braneworld scenario
... can even be avoided. The inflationary universe emerges from a small static state containing the seeds for the development of the microscopic universe. However, this cosmological model suffers from a fine-tuning problem which can be ameliorated by modifications to the cosmological equations of general r ...
... can even be avoided. The inflationary universe emerges from a small static state containing the seeds for the development of the microscopic universe. However, this cosmological model suffers from a fine-tuning problem which can be ameliorated by modifications to the cosmological equations of general r ...
DTU_9e_ch14 - USD Home Pages
... and disappear so quickly that they do not violate any laws of nature. The tidal force just outside of the event horizon of a black hole is strong enough to tear apart two virtual particles that appear there before they destroy each other. The gravitational energy that goes into separating them makes ...
... and disappear so quickly that they do not violate any laws of nature. The tidal force just outside of the event horizon of a black hole is strong enough to tear apart two virtual particles that appear there before they destroy each other. The gravitational energy that goes into separating them makes ...
Spacetime and Gravity S3.1 Multiple
... 4) Describe two observational tests that support general relativity. Answer: Many possible answers, including: experiments in gravitational time dilation, observations of gravitational redshift, observations of gravitational lenses, evidence from binary pulsars for gravitational waves. 5) What is gr ...
... 4) Describe two observational tests that support general relativity. Answer: Many possible answers, including: experiments in gravitational time dilation, observations of gravitational redshift, observations of gravitational lenses, evidence from binary pulsars for gravitational waves. 5) What is gr ...
paper - Dimi Chakalov`s web site
... "To arrive at a conserved energy that can be exchanged between the detector and the wave, we have to treat the wave and detector together. This is not so easy in general relativity, because it is not easy to define the wave separately from the rest of the geometry. (...) Energy is only conserved in ...
... "To arrive at a conserved energy that can be exchanged between the detector and the wave, we have to treat the wave and detector together. This is not so easy in general relativity, because it is not easy to define the wave separately from the rest of the geometry. (...) Energy is only conserved in ...
PDF sample
... when black holes collide somewhere in our intergalactic neighborhood. As John Archibald Wheeler, a dean of American relativity, once noted in the dedication of his autobiography, “We will first understand how simple the universe is when we recognize how strange it is.” But arriving at that knowledge ...
... when black holes collide somewhere in our intergalactic neighborhood. As John Archibald Wheeler, a dean of American relativity, once noted in the dedication of his autobiography, “We will first understand how simple the universe is when we recognize how strange it is.” But arriving at that knowledge ...
lecture4-Golem
... The major fuel, deuterium, may be readily extracted from ordinary water, which is available to all nations. The surface waters of the earth contain an essentially inexhaustible supply. The tritium required would be produced from lithium, which is available from land deposits or from sea water which ...
... The major fuel, deuterium, may be readily extracted from ordinary water, which is available to all nations. The surface waters of the earth contain an essentially inexhaustible supply. The tritium required would be produced from lithium, which is available from land deposits or from sea water which ...
Quantum Field Theory in Curved Spacetime and Horizon
... The thesis aims at studying Quantum Field Theory in Curved Spacetimes and understanding what it tells us about Horizon Thermodynamics. Besides the fact that the study of quantum fields in curved spacetimes (or in general, non-inertial coordinates) reveals many new phenomena that cannot possibly be f ...
... The thesis aims at studying Quantum Field Theory in Curved Spacetimes and understanding what it tells us about Horizon Thermodynamics. Besides the fact that the study of quantum fields in curved spacetimes (or in general, non-inertial coordinates) reveals many new phenomena that cannot possibly be f ...
General relativity in a (2+1)-dimensional space
... solutions and simple cosmological solutions. In the present paper, we will present an exact electrically charged solution to the combined Einstein-MaxweU equations. Studies of general relativity in a ( 2 + 1)dimensional space-time carried out by a number of authors [1-5] have proven instructive in a ...
... solutions and simple cosmological solutions. In the present paper, we will present an exact electrically charged solution to the combined Einstein-MaxweU equations. Studies of general relativity in a ( 2 + 1)dimensional space-time carried out by a number of authors [1-5] have proven instructive in a ...
Scientific Content
... phenomenological level, is given by early universe cosmology and black hole physics. Indeed, both black hole theory and cosmology should be re-examined in the context of Supergravity/Superstring theory [3-6]: ...
... phenomenological level, is given by early universe cosmology and black hole physics. Indeed, both black hole theory and cosmology should be re-examined in the context of Supergravity/Superstring theory [3-6]: ...
Slide 1
... “While it is never safe to affirm that the future of Physical Science has no marvels in store even more astonishing than those of the past, it seems probable that most of the grand underlying principles have been firmly established and that further advances are to be sought chiefly in the rigorous a ...
... “While it is never safe to affirm that the future of Physical Science has no marvels in store even more astonishing than those of the past, it seems probable that most of the grand underlying principles have been firmly established and that further advances are to be sought chiefly in the rigorous a ...
12 - Northern Highlands
... object gets to the speed of light, the more of its kinetic energy becomes mass instead of motion. Matter can never exceed the speed of light because adding energy creates more mass instead of increasing an object’s speed. Distances 3. The length of an object measured by one person at rest will not b ...
... object gets to the speed of light, the more of its kinetic energy becomes mass instead of motion. Matter can never exceed the speed of light because adding energy creates more mass instead of increasing an object’s speed. Distances 3. The length of an object measured by one person at rest will not b ...