Kategoria BISAC: Science >> Physics - Gravity

The book provides readers with an understanding of the mutual conditioning of spacetime and interactions and matter. The spacetime manifold will be looked at to be a reservoir for the parametrization of operation Lie groups or subgroup classes of Lie groups. With basic operation groups or Lie algebras, all physical structures can be interpreted in terms of corresponding realizations or representations. Physical properties are related eigenvalues or invariants. As an explicit example of operational spacetime is proposed, called electroweak spacetime, parametrizing the classes of the...

Dark Matter and Dark Energy offers a compact introduction to cosmological perturbation theory - a fundamental ingredient to understanding dark matter and energy in the universe. Current developments in research and theory are presented.

Aside from the obvious statement that it should be a theory capable of unifying general relativity and quantum field theory, not much is known about the true nature of quantum gravity.

New ideas - and there are many of them for this is an exciting field of research - often diverge to a degree where it seems impossible to decide in which of the many possible direction(s) the ongoing developments should be further sustained.

The division of the book in two (overlapping) parts reflects the duality between the physical vision and the mathematical construction. The former is...

Time. Gravity. Night. So much of what surrounds us feels familiar and mundane. But each is a wonder that reveals profound insights into the world around us.

C. Renee James's whimsical tour of seven everyday experiences--night, light, stuff, gravity, time, home, and wonder--opens the Universe to fantastical contemplation. Light? Although we need it to see, there's much more to it than meets the eye. Stuff? When it comes down to it, things are almost entirely empty space--99.9% nothing--especially when you get to the atomic level. Home? James's contemplation of our place in the...

Time. Gravity. Night. So much of what surrounds us feels familiar and mundane. But each is a wonder that reveals profound insights into the world around us.

C. Renee James's whimsical tour of seven everyday experiences--night, light, stuff, gravity, time, home, and wonder--opens the Universe to fantastical contemplation. Light? Although we need it to see, there's much more to it than meets the eye. Stuff? When it comes down to it, things are almost entirely empty space--99.9% nothing--especially when you get to the atomic level. Home? James's contemplation of our place in the...

This volume reviews the current status with respect to both theory and observation of the extragalactic distance scale. A sufficient accuracy is required both for a precise determination of the cosmological parameters and also in order to achieve a better understanding of physical processes in extragalactic systems. The "standard candles," used to set up the extragalactic distance scale, reviewed in this book include cepheid variables, RR Lyrae variables, novae, Type Ia and Type II supernovae as well as globular clusters and planetary nebulae.

The formation of galaxies is one of the greatest puzzles in astronomy, the solution is shrouded in the depths of space and time, but has profound implications for the universe we observe today. This book discusses the beginnings of the process from cosmological observations and calculations. It examines the different theories of galaxy formation and shows where each theory either succeeds or fails in explaining what we actually observe. In addition, the book looks ahead to what we may expect to uncover about the epoch of galaxy formation from the new and upcoming generations of telescopes...