#Cosmology #CosmicMicrowaveBackground #Supersymmetr MOND Can’t Replace Dark Matter! “I don’t like the idea of MOND as an alternative to dark matter. And the reason is it’s just not the theoretical physics we’ve been developing…The most elementary things that you can think of are firmly encoded in those mathematical theories.”
This episode was a blast. We discussed much!
-Anomalies in Cosmology and Particle Physics
-Breaking Out of the Narrow Range: Brainstorming Tension Resolutions
-The Need for a Research Management Process in Modern Physics
-Solving Astrophysical Puzzles: Interpreting Data and Providing Explanations
-Overlooked and Incredible Measurements in Cosmology
-Theories of Galaxy Formation & Structure: Analyzing Rotation Curves
-The Invariance of Laws in Modern Physics: Debating MOND and Dark Matter
-Measuring the Excess Cosmic Optical Background: The SPHEREx Project
-Reflecting on Losing the Nobel Prize
Marc Kamionkowski is a theoretical physicist, whose research is in cosmology, astrophysics, and elementary-particle theory. His main focus has been on particle dark matter, inflation the cosmic microwave background, and cosmic acceleration. His 1999 paper, A Polarization Pursuer’s Guide inspired Professor Keating to create the BICEP experiment. He is the William R. Kenan, Jr. Professor of Physics at Johns Hopkins University.
00:00:00 Intro
00:04:39 The BICEP 2 Press Conference St. Patrick’s Day 2014 and how Professor Kamionkowski inspired the BICEP collaboration and the story of the well-known cosmology paper: A Polarization Pursuers’ Guide, 1999 ( ), the inspiration for BICEP.
00:06:58 Did you realize the implications of your paper for telescope design at the time? Marc’s proposition to measure the amplitude of primordial gravitational waves, even with a small aperture telescope. The origins of BICEP and the Simons Observatory.
00:15:40 Optical surveys are still a cornerstone of observational cosmology like weak gravitational lensing and comparisons to E/ B mode curl components measurements.
00:17:10 Weak lensing Vs baryonic acoustic oscillations. Methods of measuring the matter distribution of the Universe at galactic scales.
00:19:28 What do you think of Modified Newtonian Dynamics (MOND)? Spoiler alert – not much! One physical theory should work everywhere.
00:23:50 The beauty of broken symmetries and why they are important. However, the underlying theories still hold.
00:28:50 Is a theory of everything possible? Are physicists “lost in math”? What do you think makes good mathematical models? Little attention has been given to alternatives to symmetries in string / super-symmetry theories which have not been productive? Behold the examples of Bohr and Balmer’s formula and the breakthroughs of the 20th century. The price tags and time scales are much bigger now. Don’t abandon the notion of symmetry!
00:34:53 The cosmological principle; should it go away? What would you do if it did? All models are approximations. We have good descriptions.
00:41:00 The social contagion of Eric Lerner and the controversy over the refutation of the Big Bang Theory. Does it make you re-evaluate the standard model of the Universe?
00:45:5l0 About the Hubble Tension. What is it? Why worry? Or not!
00:52:25 The issue of primordial magnetic fields. Could it be an explanation for the Hubble tension?
00:56:00 Professor Kamionkowski’s explanation of early Dark Energy and his 2018 paper.
00:59:10 Anti-helium and anti-matter clouds
01:01:10 What theoretical physics “crisis” or anomalies should we most focus on? How do you choose? Let’s not all focus on the same problems! What about the cosmic optical background found by the New Horizons Long Range Reconnaissance Imager?
01:10:35 Is there an Axion Persurer’s Guide to be written?
01:12:00 What is the status of the theory of Inflation and where will it go? A field Marc helped initiate.
01:17:50 First existential question: What would you put on your monolith?
01:21:20 What have you changed your mind about?
#Cosmology #ParticlePhysics #NewHorizons #SPHEREx #Inflation #GoodScience
#universe #podcast #briankeating #intotheimpossible #science #astronomy
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