Tootfinder

Slowly rejoining the real world after the shock of dad's passing. I looked at the news last night. Yup, the world is still going crazy. Going to get a shower and then head to the store to pick up food for the dogs. Try to be in public and appear normal-ish.
Made a 170 mile round trip on the motorcycle a couple days ago. Saw my brothers and had dinner with Dad's best friend and his wife. Realized on the way home that it was a lot colder than I realized, and I'm not going to …

We had a surprise opportunity to go to the beach this weekend, near Southport NC. I have the weird preference to sling my hammock under the house, between the clotheslines, instead of sleeping indoors. Half camping? I use a big rubbermaid box as my "suitcase" and put my shoes on it overnight... It was cold at night, but an underquilt and reflecting bubble insulation in the hammock, with an inflatable mattress on top of my down sleeping bag, kept me cozy.
My wife and I went to …

Strong enhancement of d-wave superconductivity in an extended checkerboard Hubbard ladder
Xichen Huang, Saisai He, Jize Zhao, Zhong-Bing Huang
https://arxiv.org/abs/2509.24415 h…

Strong enhancement of d-wave superconductivity in an extended checkerboard Hubbard ladder
By employing the density-matrix renormalization group method, we study an extended checkerboard Hubbard model on the two-leg ladder, which includes an intraplaquette nearest-neighbour attraction V. The simulated results show that V plays a significant role in enhancing the d-wave superconductivity when the electron density is close to half-filling. In the homogeneous case t'=t (t and t' are the intraplaquette and interplaquette hopping integrals), large critical |Vc| is required to in…

Non-local edge mode hybridization in the long-range interacting Kitaev chain
David Haink, Andreas A. Buchheit, Benedikt Fauseweh
https://arxiv.org/abs/2509.26447 https://…

Non-local edge mode hybridization in the long-range interacting Kitaev chain
In one-dimensional p-wave superconductors with short-range interactions, topologically protected Majorana modes emerge, whose mass decays exponentially with system size, as first shown by Kitaev. In this work, we extend this prototypical model by including power law long-range interactions within a self-consistent framework, leading to the self-consistent long-range Kitaev chain (seco-LRKC). In this model, the gap matrix acquires a rich structure where short-range superconducting correlations c…