Tootfinder

Rank-2 wobbly bundles from special divisors on spectral curves
Duong Dinh
https://arxiv.org/abs/2406.04224 https://arxiv.org/pdf/2406…

Rank-2 wobbly bundles from special divisors on spectral curves
Let $X$ be a compact connected Riemann surface of genus $g \geq 3$ and $S \rightarrow X$ a $2:1$ branched covering defined by a generic quadratic differential on $X$. In the following notes, we explore how taking direct images of line bundles defined by certain distinguished special divisors on $S$ gives rank-2 bundles having nilpotent Higgs fields on $X$. The key ingredient is the notion of Baker-Akhiezer divisors associated to Higgs bundles and choices of subbundles of the underlying rank-2 b…

This https://arxiv.org/abs/2405.06882 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
We present a complete and consistent exposition of the regularization, renormalization, and resummation procedures in the setup of having a contraction and then non-singular bounce followed by inflation with a sharp transition from slow-roll (SR) to ultra-slow roll (USR) phase for generating primordial black holes (PBHs). We consider following an effective field theory (EFT) approach and study the quantum loop corrections to the power spectrum from each phase. We demonstrate the complete remova…

Fundamental effective temperature measurements for eclipsing binary stars -- V. The circumbinary planet system EBLM J0608-59
P. F. L. Maxted, N. J. Miller, D. Sebastian, A. H. M. J. Triaud, D. V. Martin, A. Duck
https://arxiv.org/abs/2406.04204

Fundamental effective temperature measurements for eclipsing binary stars -- V. The circumbinary planet system EBLM J0608-59
EBLM J0608-59 / TOI-1338 / BEBOP-1 is a 12th-magnitude, F9V star in an eclipsing binary with a much fainter M-dwarf companion on a wide, eccentric orbit (P=14.6 d). The binary is orbited by two circumbinary planets: one transiting on a 95-day orbit and one non-transiting on a 215-day orbit. We have used high-precision photometry from the TESS mission combined with direct mass measurements for the two stars published recently to measure the following model-independent radii: $R_1 = 1.32 \pm 0.02…

Time-resolved optical assessment of exciton formation in mixed two-dimensional perovskite films
Zheng Zhang, Jianan Wang, Yijie Shi, Xi Wang, Zhong Wang, Xiangyu Zhu, Chunlong Hu, Zonghao Liu, Wei Chen, Wenxi Liang
https://arxiv.org/abs/2406.03876

Time-resolved optical assessment of exciton formation in mixed two-dimensional perovskite films
We report the observation of exciton formation from the cooled band-edge carriers in mixed two-dimensional hybrid organic-inorganic perovskites using femtosecond transient absorption spectroscopy. By monitoring the changes of bleach signal upon excitations with various photon energy, we are able to extract the values of exciton binding energy and the occupancies of carriers of free and bound states for each two-dimensional phase. We also confirm the existence of Mahan exciton when injected carr…

Chemical Abundances of Early Quiescent Galaxies: New Observations and Modelling Impacts
Marziye Jafariyazani, Andrew B. Newman, Bahram Mobasher, Sirio Belli, Richard S. Ellis, Andreas L. Faisst
https://arxiv.org/abs/2406.03549

Chemical Abundances of Early Quiescent Galaxies: New Observations and Modelling Impacts
Recent stellar chemical abundance measurements of a handful of $z\sim2$ quiescent galaxies have suggested these galaxies exhibit a remarkably strong $α$-enhancement compared to their local and intermediate redshift counterparts. This apparent chemical evolution following quenching suggests that even the innermost regions of massive early-type galaxies may have experienced substantial mixing of stars in mergers, challenging a purely inside-out growth model. However, larger samples are needed to…

This https://arxiv.org/abs/2111.15488 has been replaced.
link: https://scholar.google.com/scholar?q=a

High-Temperature Anomalous Metal States in Iron-Based Interface Superconductors
The nature of the anomalous metal state has been a major puzzle in condensed matter physics for more than three decades. Here, we report systematic investigation and modulation of the anomalous metal states in high-temperature interface superconductor FeSe films on SrTiO3 substrate. Remarkably, under zero magnetic field, the anomalous metal state persists up to 20 K in pristine FeSe films, an exceptionally high temperature standing out from previous observations. In stark contrast, for the FeSe…

'Home-bias', 'authorship inflation', and how science in the West might keep up with China.
https://open.substack.com/pub/noahpinion/p/is-the-west-falling-behind-in-science?r=8k45f&utm_medium=ios

Is the West falling behind in science?
China is now the leader in applied physical sciences. How can the U.S. and its allies catch up?

Chemical Abundances of Early Quiescent Galaxies: New Observations and Modelling Impacts
Marziye Jafariyazani, Andrew B. Newman, Bahram Mobasher, Sirio Belli, Richard S. Ellis, Andreas L. Faisst
https://arxiv.org/abs/2406.03549

Chemical Abundances of Early Quiescent Galaxies: New Observations and Modelling Impacts
Recent stellar chemical abundance measurements of a handful of $z\sim2$ quiescent galaxies have suggested these galaxies exhibit a remarkably strong $α$-enhancement compared to their local and intermediate redshift counterparts. This apparent chemical evolution following quenching suggests that even the innermost regions of massive early-type galaxies may have experienced substantial mixing of stars in mergers, challenging a purely inside-out growth model. However, larger samples are needed to…

Autism spectrum, feelings and (against all odds) a Witcher quote
"""
[…] Because you're a witcher and you can't feel any emotion. You don't want to fulfill my request, because you think that you care about her, you think that… Geralt, you are with her only because she wants that, and you'll be with her for as long as she wants to. What you're feeling is a projection of her emotion, her interest in you. To all demons of the Pit, Geralt, you're not a child, you know who you are. You're a mutant. Don't misunderstand me, I'm not saying this to offend or disdain you. I'm just stating a fact. You're a mutant, and one of the basic features of your mutation is your full immunity to emotion. You've been made like this so that you could do your job. Do you understand? You can't feel anything. What you're taking as emotion is actually cell memory, somatic memory, if you know what that means.
"""
(Andrzej Sapkowski, Miecz przeznaczenia, Okruch lodu, Istredd's words, my own translation)
However the context is different, it made me think of my own problems with emotions.
Am I capable of love? Or perhaps I can merely project somebody else's feelings, return them at the best. Or perhaps just intellectually be aware of what I am supposed to feel.
Was perhaps that, what I used to take for "love", actually gratitude that somebody was nice to me, or that she showed interest?
Or perhaps was it that she fitted into an unrealistic model that I've engraved into my personality as a child?
Or just an attachment, a feeling of safety, stemming from a large data set. A conviction that unpleasant surprise is no longer that likely.
Or just desperation, a need that's been forced into me since I was a child and that now I'm trying to attain based on what the media, books and personal stories tell me about it.
Or even something resembling a Stockholm syndrome. "At least she's paying attention to me. I know the worst she could do to me."
#ActuallyAutistic

"Harmful gases destroying ozone layer falling faster than expected, study finds"
#Ozone #OzoneLayer #Chemicals