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Cake day: August 15th, 2025

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  • Huh, I thought ‘that’s brilliant, why shouldn’t/ofc changes in imaginary time affect measurable things’ … a second later, nah, that’s silly talk, how tf do you measure that??

    Something related Measuring the imaginary time dynamics of quantum materials:

    Theoretical analysis typically involves imaginary-time correlation functions. Inferring real-time dynamical response functions from this information is notoriously difficult. However, as we articulate here, it is straightforward to compute imaginary-time correlators from the measured frequency dependence of (real-time) response functions. In addition to facilitating comparison between theory and experiment, the proposed approach can be useful in extracting certain aspects of the (long-time relaxational) dynamics from a complex data set. We illustrate this with an analysis of the nematic response inferred from Raman scattering spectroscopy on the iron-based superconductor B⁢a⁢(F⁢e1−x⁢C⁢ox)2⁢A⁢s2, which includes a new method for identifying a putative quantum-critical contribution to that response.












  • Well, modifications to Mercator world maps are not a bad idea, people genuinely don’t understand the size differentness (both ways - equatorial ppl how smol northern & southern territories are & the other way around, eg Europeans how big most of Africa is in comparison).

    The bad part of normalising anther type of sphere projection for this purpose is that it almost certainly wouldn’t follow just one simple rule like Mercator’s. And with that exact predictability actually diminished in a way.

    Eg, we could try to keep countries as close to the same-ish size & in return shrink (or have gaps in) oceans. Or keep smaller gaps between counties/some squares. Or have several different projections merged into one global map. Etc.
    All of it is always arbitrary.
    The true answer is only education (not necessarily, but preferability in early school days).

    wiki/Waterman_butterfly_projection: