Profile cover photo
Profile photo
James Rantschler (PhysicsFM)
7 followers
7 followers
About
Posts

Post has attachment
Do quasiparticles in materials that have negative effective mass show a negative gravitational mass as well?
Add a comment...

Post has attachment
Negative Effective Mass
<-- Previous (Space-Time Dimensions) (Octonions) Next --> Recorded: 9/29/2018
Released: 12/9/2018 Randy introduces Jim to gravitational effects on quasiparticles in materials. The inertial quality of the mass of a quasiparticle gets modified by the latti...
Add a comment...

Post has attachment
Why is space-time four dimensional?  Jim and Randy discuss why in terms of predictability, complexity, and stability.
Add a comment...

Post has attachment
The Dimensionality of Space Time
<-- Previous (Einstein-Cartan Theory) (Negative Effective Mass) Next --> Recorded: 9/8/2018
Released: 11/25/2018 Jim and Randy discuss why space-time is four dimensional. Much of what they discuss is anthropic in nature: what sort of universe can we exis...
Add a comment...

Post has attachment
What happens when you incorporate a spin field into general relativity?  You get rid of singularities.
Add a comment...

Post has attachment
The Einstein-Cartan Torsion Field Theory
<-- Previous (Metamaterial Stress Tensor) (Space-Time Dimension) Next --> Recorded: 6/10/2018
Released: 10/29/2018 Randy explains some recent developments in the Einstein-Cartan torsion field to Jim. This theory introduces at least one tensor field repre...
Add a comment...

Post has attachment
Randy tells Jim about recent computational advances in describing the interaction of the electromagnetic field with material objects.
Add a comment...

Post has attachment
Metamaterial Stress Tensor
<-- Previous (String Theory Landscape) (Einstein-Cartan Theory) Next --> Recorded: 5/26/2018
Released: 10/14/2018 Randy tells Jim about advances in the stress-momentum tensor of electrodynamics. This tensor can be integrated over the boundary of an objec...
Add a comment...

Post has attachment
How do the string theories relate to each other?  Which string theories are compatible with life? Jim and Randy discuss the landscape of string theory.
Add a comment...

Post has attachment
The String Theory Landscape
<-- Previous (CPT Symmertry and Gravitation) (Metamaterial Stress Tensor) Next --> Recorded: 5/12/2018
Released: 9/21/2018 Jim and Randy explore the landscape of string theory, an idea put forward by Leonard Susskind about how to interpret the cornucopia ...
Add a comment...
Wait while more posts are being loaded