Tootfinder

Joint inversion for Vp, Vp/Vs of the San Fransico Bay Area using ADTomo
Ling Xia, Weiqiang Zhu, Huajian Yao
https://arxiv.org/abs/2507.21451 https://arxiv.…

Joint inversion for Vp, Vp/Vs of the San Fransico Bay Area using ADTomo
This article presents a new seismological tomography method based on the fast sweeping method and advanced seismic phase picking techniques to study the complex geological structures of the San Francisco Bay Area. By calculating the eikonal equation using the fast-sweeping method, this study obtains travel time information and gradient data under a given velocity structure. With an automatic differentiation algorithm to calculate gradients of the loss function and the L-BFGS algorithm to achiev…

Barren-plateau free variational quantum simulation of Z2 lattice gauge theories
Fariha Azad, Matteo Inajetovic, Stefan K\"uhn, Anna Pappa
https://arxiv.org/abs/2507.19203 h…

Barren-plateau free variational quantum simulation of Z2 lattice gauge theories
In this work, we design a variational quantum eigensolver (VQE) suitable for investigating ground states and static string breaking in a $\mathbb{Z}_2$ lattice gauge theory (LGT). We consider a two-leg ladder lattice coupled to Kogut-Susskind staggered fermions and verify the results of the VQE simulations using tensor network methods. We find that for varying Hamiltonian parameter regimes and in the presence of external charges, the VQE is able to arrive at the gauge-invariant ground state wit…

PRAC3 (Privacy, Reputation, Accountability, Consent, Credit, Compensation): Long Tailed Risks of Voice Actors in AI Data-Economy
Tanusree Sharma, Yihao Zhou, Visar Berisha
https://arxiv.org/abs/2507.16247

PRAC3 (Privacy, Reputation, Accountability, Consent, Credit, Compensation): Long Tailed Risks of Voice Actors in AI Data-Economy
Early large-scale audio datasets, such as LibriSpeech, were built with hundreds of individual contributors whose voices were instrumental in the development of speech technologies, including audiobooks and voice assistants. Yet, a decade later, these same contributions have exposed voice actors to a range of risks. While existing ethical frameworks emphasize Consent, Credit, and Compensation (C3), they do not adequately address the emergent risks involving vocal identities that are increasingly…

One loop in $D=11$ vs $D=10$: a mismatch
Aviral Aggarwal, Subhroneel Chakrabarti, Steven Weilong Hsia, Ahmed Rakin Kamal, Linus Wulff
https://arxiv.org/abs/2506.16391

One loop in $D=11$ vs $D=10$: a mismatch
The one-loop correction to eleven-dimensional supergravity involves a term $t_8t_8R^4$, with four Riemann tensors. With a suitable UV regularization, this term is expected to reduce to a similar one-loop term present in the type IIA effective action. We show that, while this is indeed the case in the NSNS sector, it fails when one includes the RR fields. Specifically, we identify 4-point couplings involving the dilaton, the graviton and two RR one-forms which lead to amplitudes that disagree wi…

På vej til Tirpitz Museet - museum indrettet i en gammel bunker, så vidt jeg forstår. Ser spændende ud: https://tirpitz.dk/

Knapsack and Shortest Path Problems Generalizations From A Quantum-Inspired Tensor Network Perspective
Sergio Mu\~niz Subi\~nas, Jorge Mart\'inez Mart\'in, Alejandro Mata Ali, Javier Sedano, \'Angel Miguel Garc\'ia-Vico
https://arxiv.org/abs/2506.11711

Knapsack and Shortest Path Problems Generalizations From A Quantum-Inspired Tensor Network Perspective
In this paper, we present two tensor network quantum-inspired algorithms to solve the knapsack and the shortest path problems, and enables to solve some of its variations. These methods provide an exact equation which returns the optimal solution of the problems. As in other tensor network algorithms for combinatorial optimization problems, the method is based on imaginary time evolution and the implementation of restrictions in the tensor network. In addition, we introduce the use of symmetrie…

Jeg sidder i bilen på vej til SŸnderjylland og planlægger min fŸdselsdag. Den falder på en torsdag, og jeg vil prŸve at fylde den med ting som gŸr mig godt 🥰
ForelŸbig har jeg booket bord til brunch på Baryl sammen med min sŸster, en tid til massage i nærheden, og derefter kaffe med en god veninde. Så satser jeg på at mine sŸnner kan finde vej til Frederiksberg hvor gemalen kan samle os op og kŸre os til min mor og hendes mand. Måske med en konditorkage med i bilen? Eller også skal jeg fi…

På vej til Legoland, juhuu! (Jeg er snart 51 og elsker det stadig 🥳)

I morgen kl 14 er der anti-Trump demo ved Democrats Abroad. Vi starter på Kgs Nytorv og går til den amerikanske ambassade. Min sŸde, amerikanske svigerinde er medarrangŸr (jeg er så stolt af hende!).
Kom og lad os sammen vise modstand mod det autokratiske regime i USA!
https://www.democratsabroad.org/cph_no_tyr…

No Tyrants Protest in Copenhagen
Democrats Abroad strives to provide Americans abroad a Democratic voice in our government and elect Democratic candidates by mobilizing the overseas vote.