Gravitation and cosmology by weinberg

  • What is Einstein theory of gravity?

    GETTING A GRIP ON GRAVITY Einstein's general theory of relativity explains gravity as a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy.
    A massive object generates a gravitational field by warping the geometry of the surrounding spacetime..

  • Gravity is indeed a real force, but not in the traditional sense.
    In other words, gravity is not a direct, classical, action-at-a-distance force between two objects.
    However, in the broader sense, gravity is indeed a force because it describes the resulting interaction between two masses.

What is the quantum theory of fields by Steven Weinberg?

In The Quantum Theory of Fields, Nobel Laureate Steven Weinberg combines his exceptional physical insight with his gift for clear exposition to provide a self-contained, comprehensive, and up-to-date introduction to quantum field theory.
This is a two-volume work.
Volume I introduces the foundations of quantum field theory.

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What is Weinberg's model of unification of electromagnetism and nuclear weak forces?

It was in that year at MIT that Weinberg proposed his model of unification of electromagnetism and nuclear weak forces (such as:

  • those involved in beta-decayand kaon-decay)
  • with the masses of the force-carriers of the weak part of the interaction being explained by spontaneous symmetry breaking.
    • ,

    What is Weinberg's theory?

    In it, the weak and electromagnetic interactions already unified by the work of Weinberg, Salam and Glashow, are made consistent with a theory of the strong interactions between quarks, in one overarching theory.
    In 1973, Weinberg proposed a modification of the Standard Model that did not contain that model's fundamental Higgs boson.


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