Daniel Carney
@fourform.bsky.social
theoretical physics. measurement at the limits of quantum mechanics and gravity (and sometimes both).
Scientist @ Berkeley National Lab. http://qquest.lbl.gov/~carney/
Scientist @ Berkeley National Lab. http://qquest.lbl.gov/~carney/
If you want to hear me ramble about quantum noise and cosmic neutrinos, gravitational waves, and axions over zoom, this is tomorrow 4pm ET:
sites.google.com/view/hepastr...
sites.google.com/view/hepastr...
HEP/Astro Results Forum
Our mission is to host in-depth and unbiased overview talks on recent experimental/observational results of interest, given by experts in the field, to a broad audience of particle physicists and astr...
sites.google.com
March 27, 2025 at 7:05 PM
If you want to hear me ramble about quantum noise and cosmic neutrinos, gravitational waves, and axions over zoom, this is tomorrow 4pm ET:
sites.google.com/view/hepastr...
sites.google.com/view/hepastr...
Gravity could come from gravitons, like light comes from photons. Or maybe, like sound waves in a gas, it could come from the entropic dynamics of some microscopic thermal system.
But could that really work? And could it be tested?
We think so.
arxiv.org/abs/2502.17575
But could that really work? And could it be tested?
We think so.
arxiv.org/abs/2502.17575
On the quantum mechanics of entropic forces
It was conjectured thirty years ago that gravity could arise from the entropic re-arrangement of information. In this paper, we offer a set of microscopic quantum models which realize this idea in det...
arxiv.org
February 26, 2025 at 7:44 PM
Gravity could come from gravitons, like light comes from photons. Or maybe, like sound waves in a gas, it could come from the entropic dynamics of some microscopic thermal system.
But could that really work? And could it be tested?
We think so.
arxiv.org/abs/2502.17575
But could that really work? And could it be tested?
We think so.
arxiv.org/abs/2502.17575
The White House budget office is ordering a pause to all grants and loans disbursed by the federal government, according to an internal memo sent to agencies Monday, creating significant confusion across Washington.
White House pauses all federal grants, sparking confusion
The Trump administration has put a hold on all federal financial grants and loans, affecting tens of billions of dollars in payments.
www.washingtonpost.com
January 28, 2025 at 6:00 PM
Could gravity be "fundamentally classical"? Akira Matsumura and I analyzed Oppenheim (@postquantum.bsky.social) et al.'s proposal. tl;dr:
A. it appears to have Lorentz-covariant scattering
B. 2—>2 scattering differs at O(1) from the usual Rutherford/Newton answer
arxiv.org/abs/2412.04839
A. it appears to have Lorentz-covariant scattering
B. 2—>2 scattering differs at O(1) from the usual Rutherford/Newton answer
arxiv.org/abs/2412.04839
Classical-quantum scattering
We analyze the framework recently proposed by Oppenheim et al. to model relativistic quantum fields coupled to relativistic, classical, stochastic fields (in particular, as a model of quantum matter c...
arxiv.org
December 9, 2024 at 8:40 PM
Could gravity be "fundamentally classical"? Akira Matsumura and I analyzed Oppenheim (@postquantum.bsky.social) et al.'s proposal. tl;dr:
A. it appears to have Lorentz-covariant scattering
B. 2—>2 scattering differs at O(1) from the usual Rutherford/Newton answer
arxiv.org/abs/2412.04839
A. it appears to have Lorentz-covariant scattering
B. 2—>2 scattering differs at O(1) from the usual Rutherford/Newton answer
arxiv.org/abs/2412.04839
Look upon my TikZ, ye mighty, and despair.
December 2, 2024 at 10:52 PM
Look upon my TikZ, ye mighty, and despair.