100 Sharply Formulated Open Problems in Theoretical Physics: Cosmology, Gravitation, High-Energy Physics, Quantum Gravity, and Mathematical Physics; Selected with a bias of personal preference and interactions with AI. https://t.co/wbd38rj3UL
Rong-Gen Cai, Shao-Jiang Wang, The Hubble tension: A decade review, Research in Astronomy and Astrophysics 26 (2026) 084011, preprint version updated with slightly more references https://t.co/YsbrEBQNf6
The doomsday of black hole evaporation https://t.co/0uk0Gj9Cc8 @epl_journal It's surprising to infer a constant (1/4 in Planck unit) rate for BH mass evaporation at very late stage (before QG coming in) from several well-motivated beliefs of principles when d.o.f. is very large.
Phys. Rev. D 108, L021502 (2023) - Hydrodynamic sound shell model https://t.co/j8OTyWwfmt
We have worked out GWs from sound waves during the percolation stage of cosmological first-order phase transitions as a complementary work of previous sound shell model after percolations
For this Chinese Spring Festival, I am surprised by #TheWanderingEarth2 which establishes a new style of science fiction film, totally different from Superhero, Cyberpunk, or Space Opera. Some of my colleagues have contributed to the science team, making it enormously immersive.
I watched "The Wandering Earth🌎 2" today. The idea of space elevator and detonating of the moon are really shocking. I never thought that China could make such a good hard science fiction movie.
I recommend everyone to watch it.🙋
Cosmographers’ goal is to map the universe. They can not only learn more about structures we can see, they also gain insight into the things we cannot see!
This Massive Wall of Galaxies Is Lurking Beyond the Milky Way | Full video from Seeker By The Verge https://t.co/QoNPazB7yS
Today @LIGO@ego_virgo & @KAGRA_PR have exciting news: the first ever confirmed detections of a #NeutronStar#BlackHole binary merger. Find out more at https://t.co/RKdgwo92IK and read our discovery paper, published today in ApJ letters https://t.co/GlcmP5syJ4
Yay! 🥳Our paper on Wash-In Leptogenesis just got published in @PhysRevLett: https://t.co/oNgoBiyn0f Key message: In the presence of heavy neutrinos with masses above 10^5 GeV, the first Sakharov condition is actually much weaker than previously thought! @CERN@CERNpress
The DArk Matter Particle Explorer (DAMPE) confirms that the cosmic ray helium spectrum softens at about 34 TeV.
Letter: https://t.co/PFRN13PLg9
Synopsis: https://t.co/9EyqGjp1Xd
A gravitationally lensed gamma-ray burst has been detected, with the inferred lens mass indicating that the lens is an intermediate-mass black hole. James Paynter, Rachel Webster & Eric Thrane: https://t.co/g3S3WvYrHX
Our "Effective picture of bubble expansion" has now been published in https://t.co/k4Q4N0EhD6, where we derived an effective EOM for an expanding bubble wall in plasma with a general friction term exerting on the bubble wall against the driving force from released vacuum energy.
[2102.05701] Weikang Lin, Xingang Chen, Katherine J. Mack: Early-Universe-Physics Independent and Uncalibrated Cosmic Standards: Constraint on $Ω_{\rm{m}}$ and Implications for the Hubble Tension https://t.co/WvVUwekn8q https://t.co/tQTmT1l06t #astro_ph_CO
Very excited for our new paper https://t.co/VI4XZn9FNV .Thanks Sunny for the nice introduction. Our model rules out self-acceleration since $\Delta\Omega/\Omega\ll 1$. The acceleration is driven by quintessence-like effect of chameleon trapped at Vmin acting as an effective C.C.
Esta animação de Michael Biebl mostra a estranha aparência de um buraco negro ao deforma o espaço-tempo.
Fonte: https://t.co/37aCCfmEd3
via @wonderofscience_insta
This week's Cosmology Talk...
"A tantalising hint of parity violation in the CMB"
Eiichiro Komatsu and Yuto Minami talk about this just published paper where they find a hint of birefringence in the CMB. https://t.co/95tVHJVb2O
https://t.co/biNlSQORUJ
A new analysis of the Planck polarization data removes a systemic uncertainty from measurements of the cosmic birefringence angle. A 2.4σ hint of parity-violating physics in the CMB is found with the new method.
Letter: https://t.co/G1zN1MM86C
Synopsis: https://t.co/xyo25Jf24R