Cover image of Modern Physics: Cosmology (Winter 2013)

Modern Physics: Cosmology (Winter 2013)

Modern Physics: Cosmology (Winter 2013)

Weekly hand curated podcast episodes for learning

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4. Cosmology Lecture 4 (February 4, 2013)

Leonard Susskind introduces the Einstein field equations of general relativity and thermodynamic equations of state to the analysis of the expanding universe. (February 4, 2013)

19 Feb 2013

Rank #1

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3. Cosmology Lecture 3 (January 28, 2013)

Leonard Susskind presents three possible geometries of homogeneous space: flat, spherical, and hyperbolic, and develops the metric for these spatial geometries in spherical coordinates. (January 28, 2013)

4 Feb 2013

Rank #2

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5. Cosmology Lecture 5 (February 11, 2013)

After reviewing the cosmological equations of state, Leonard Susskind introduces the concept of vacuum energy. Vacuum energy is represented by the cosmological constant, and is also known as dark energy. (February 11, 2013)

19 Feb 2013

Rank #3

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10. Cosmology Lecture 10 (March 18, 2013)

Leonard Susskind discusses the inhomogeneities in the cosmic microwave background, and derives the current theory whereby these inhomogeneities are created by quantum fluctuations in the inflaton field of the early universe. These fluctuations lead to variations in energy density that ultimately result in the formation of galaxies. (March 18, 2013)

5 Apr 2013

Rank #4

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9. Cosmology Lecture 9 (March 11, 2013)

Leonard Susskind presents the theory of cosmological inflation under which the early universe expanded exponentially before the Big Bang. This theory explains the lack of observed magnetic monopoles and the uniformity of the cosmic microwave background radiation. (March 11, 2013)

19 Mar 2013

Rank #5