Mehdi Ahmadi-Jahmani
mehdiahmadijahmani.bsky.social
Mehdi Ahmadi-Jahmani
@mehdiahmadijahmani.bsky.social
PhD candidate in high-energy physics.
Reposted by Mehdi Ahmadi-Jahmani
Scaling Symmetry and Carrollian Gravity
https://arxiv.org/pdf/2512.20736
Hamid Afshar, Mehdi Ahmadi-Jahmani.
https://arxiv.org/abs/2512.20736
arXiv abstract link
arxiv.org
December 25, 2025 at 4:34 AM
Recently, I presented my latest work (lnkd.in/dp4m5zdi), which was conducted in collaboration with Dr. Ali Parvizi at the Institute for Research in Fundamental Sciences (IPM) and Sharif University of Technology.
July 13, 2025 at 8:49 PM
Fracton/Non-Lorentzian Duality

One fascinating aspect of the behavior of fractons is the duality between fractons and other theoretical particles.
April 8, 2025 at 9:30 PM
In this paper, our motivation is to explore deeper into this connection, specifically focusing on the
electromagnetic couplings of Fractons and investigating the conditions affecting their mobility and finding
their non-Lorentzian dual particle theory.

arxiv.org/pdf/2503.21660
arxiv.org
April 8, 2025 at 9:14 PM
After considerable effort, the research was finally published.

arxiv.org/pdf/2503.21660
arxiv.org
March 28, 2025 at 2:14 PM
Fracton particles, also known as the fractonic phase of matter, represent a recent advancement in high-energy and condensed matter physics. Fractons exhibit restricted mobility; some remain immobile when isolated.
February 2, 2025 at 6:19 AM
In this paper, the authors demonstrate that Carroll gravity can be derived from Carroll conformal scalar field theory, which is coupled to Carroll conformal gravity through the use of the Carroll conformal approach.
arxiv.org/abs/2412.17752
A Conformal Approach to Carroll Gravity
We show how to take the first step in the conformal program for constructing general matter couplings to Carroll gravity. In particular, we couple a single massless electric/magnetic scalar to conform...
arxiv.org
January 11, 2025 at 6:48 AM
Gravity as Conformal gauge theory

In this method, we can derive conventional Einstein gravity from a theory that is initially invariant under the bosonic conformal algebra.
January 11, 2025 at 6:34 AM
[String 2025]

Carroll physics and flat space holography

Daniel Grumiller

slides: drive.google.com/file/d/1RvN_...

video: www.youtube.com/watch?v=KUyl...
grumiller.pdf
drive.google.com
January 8, 2025 at 5:45 PM
Reposted by Mehdi Ahmadi-Jahmani
Tantum Gravity

Florian Ecker, Adrien Fiorucci, Daniel Grumiller

arxiv.org/abs/2501.00095
Tantum Gravity
We argue there is an interesting triple-scaling limit of quantum gravity, namely when Planck's constant scales to infinity while Newton's constant and the speed of light tend to zero, keeping fixed th...
arxiv.org
January 6, 2025 at 5:23 PM
Reposted by Mehdi Ahmadi-Jahmani
Eric A. Bergshoeff, Patrick Concha, Octavio Fierro, Evelyn Rodr\'iguez, Jan Rosseel
A Conformal Approach to Carroll Gravity
https://arxiv.org/abs/2412.17752
December 24, 2024 at 5:49 AM
Recently, I have been discussing my work in progress with Ali Parvizi.
December 21, 2024 at 6:25 AM
Gauging algebra is a concept often used in theoretical physics, particularly in the context of gauge theories and gravity. It involves the process of extending a given algebra to include gauge fields, which are necessary for ensuring the invariance of the theory under local transformations.
December 21, 2024 at 6:13 AM