Please!! ]]>

The Wooters paper is a classic, but I actually think the property of recovering the marginal distribution along any straight line in phase space isn’t as important for establishing intuition as the fact that the Wigner function is the “convolutionary mean” of the Husimi Q function and the Shudarshan P function.

]]>(I tried to attach my notes but the spam filter didn’t like them – anyway you can get to them from the website link I included.)

The most elegant characterisation I found is described in e.g. this paper by Wootters: https://www.sciencedirect.com/science/article/pii/000349168790176X – as well as reproducing the position and momentum marginals, you can also integrate along any line in phase space and get the marginal for an observable that’s the appropriate linear combination of position and momentum. (Well, the actual statement in the paper is a bit more involved and involves a strip of phase space instead of a line, but still pretty close.)

]]>Best,

Jess

Be Well

Don Wright ]]>

Yuan

]]>I modified it, guided by the W3 feed validator, and it seems to be OK now, but I’m only seeing it fixed in some of the feed readers I’ve checked and not others. Hopefully this is now just a caching issue and it will be solved in a few hours or less. Please let me know if it’s not working tomorrow.

Sorry about the hassle, and thanks again for your alert. Feeds are absurdly finicky and fragile.

]]>I have been experiencing difficulties with the RSS feed of your blog lately. I don’t know if it is just me or other readers of your blog have similar issues. I use NewsBlur, a RSS feed reader. It times out when parsing the feed. I was wondering if you changed the blog setting recently.

Best,

Yuan

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