tag:blogger.com,1999:blog-22973357.post3419198971323993127..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: Why quantize gravity?Sabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger81125tag:blogger.com,1999:blog-22973357.post-7904859091508068302014-01-20T09:50:28.861-05:002014-01-20T09:50:28.861-05:00Phillip,
Some million Euro is what it takes to fu...Phillip,<br /><br />Some million Euro is what it takes to fund a small group (3-5 people) for a couple of years (3-5 years). That's the minimum it takes to do real research on that topic. About half of the money vanishes in taxes and overhead, add the numbers. Best,<br /><br />B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-55325303827788867682014-01-20T09:33:58.722-05:002014-01-20T09:33:58.722-05:00"But look, I would be surprised if the amount...<i>"But look, I would be surprised if the amount of money we can raise in the best case would pay my salary for more than two weeks. It's not that I want to brag about my income (though the Swedes pay me well), it's just that science crowdfunding is in the best case an option for small projects with costs of the order some thousand dollars maximum. That misses my mark by at least a Phillip Helbighttps://www.blogger.com/profile/12067585245603436809noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-78181526225235611782014-01-19T07:44:07.810-05:002014-01-19T07:44:07.810-05:00streamfortyseven,
Yes, I have considered it, and ...streamfortyseven,<br /><br />Yes, I have considered it, and in fact we are working on some crowdfunding for our institute (not for my research though). But look, I would be surprised if the amount of money we can raise in the best case would pay my salary for more than two weeks. It's not that I want to brag about my income (though the Swedes pay me well), it's just that science Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-26954336518304800302014-01-19T04:47:16.705-05:002014-01-19T04:47:16.705-05:00Have you ever considered doing something with Kick...Have you ever considered doing something with Kickstarter to fund your research? Or Indiegogo, or some site like that?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-22973357.post-58141714881615034462014-01-13T10:27:46.740-05:002014-01-13T10:27:46.740-05:00A single photon can excite a pluralitiy of molecul...A single photon can excite a pluralitiy of molecules (cells?)<br />And the molecules can exchange single photons for a QM only collective effect (see Nordita fb post 01/13/14).<br />A photon larger than an electron is adsorbed by no particular one its extent covered.<br />Where does the superposition go if in a unified higher theory with probability sign changes in Entanglement and superposition L. Edgar Ottohttps://www.blogger.com/profile/00525169618204198073noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-45405949488160432112014-01-13T04:29:44.572-05:002014-01-13T04:29:44.572-05:00
vmarko,
Great answer!
Helped a lot to see it fr...<br />vmarko,<br /><br />Great answer!<br /><br />Helped a lot to see it from a physicists view.<br /><br />Best, MatsAnonymoushttps://www.blogger.com/profile/06774330406587467567noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-13544155311356606192014-01-13T04:07:02.582-05:002014-01-13T04:07:02.582-05:00Mats,
I sympathize with monism, but Marko is righ...Mats,<br /><br />I sympathize with monism, but Marko is right. You have a misunderstanding of what a superposition is. As I said above, what is and what isn't a superposition is a matter of definition. In contrast to entanglement you can make it go away just by changing the basis. Best,<br /><br />B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-81983426953163937532014-01-13T04:04:42.023-05:002014-01-13T04:04:42.023-05:00Karen,
Thanks for your kind words of encouragemen...Karen,<br /><br />Thanks for your kind words of encouragement. Don't misunderstand me, I quite like the idea of writing a book, I just don't see how it will improve my situation. I know some number of people who have written moderately successful pop sci books and you can't live from that. Instead, it will at this time take away time from other things, things that might actually pay Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-71387305099891564242014-01-13T02:18:51.354-05:002014-01-13T02:18:51.354-05:00Sabine,
As someone who did leave physics for fina...Sabine, <br />As someone who did leave physics for finance, but maintained strong interest and continued following the developments in a few areas of interest, I can fully sympathize with your feelings, but I believe the thrust of your efforts to connect the theoretical search for quantum gravity with some observable phenomenology is extremely important, and i would like to encourage you to Anonymoushttps://www.blogger.com/profile/16398782926648781879noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-15088653250596419922014-01-12T16:56:07.000-05:002014-01-12T16:56:07.000-05:00Mats,
Regarding monism and pluralism --- no offen...Mats,<br /><br />Regarding monism and pluralism --- no offence, but those terms are too archaic and too vague to be useful for physics. AFAIK, there are no physicists who even think (let alone speak) about nature in those terms.<br /><br />Regarding superpositions, they are not a property of nature itself, but rather a property of how we look at nature. If you change your point of view (i.e. vmarkohttps://www.blogger.com/profile/12660488689205445871noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-52471324088565018572014-01-12T15:19:29.489-05:002014-01-12T15:19:29.489-05:00Sabine and vmarko,
Thanks for your answers. I am ...Sabine and vmarko,<br /><br />Thanks for your answers. I am not a scientist(as you may have noticed)but I´m a monist:I don´t believe there are any separat parts i.e. no separability or locality.That is why I question the superposition as it strikes me as a "part" that own some independence.If some part of the universe own independence determinism fails.Would you agree?And if you don´t Anonymoushttps://www.blogger.com/profile/06774330406587467567noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-1199213700661014332014-01-12T04:09:41.740-05:002014-01-12T04:09:41.740-05:00Mats,
I think you are mixing up the measurement p...Mats,<br /><br />I think you are mixing up the measurement problem of QM with the Schroedinger's Cat problem of QM.<br /><br />The former states that measurements represent nonunitary evolution of a quantum system, which makes QM nondeterministic.<br /><br />The latter states that there is a preferred basis in the orbital part of the Hilbert space, and that we never observe superpositions of vmarkohttps://www.blogger.com/profile/12660488689205445871noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-13498971621121916502014-01-12T02:55:00.370-05:002014-01-12T02:55:00.370-05:00Mats,
The more you write, the less you are making...Mats,<br /><br />The more you write, the less you are making sense. A superposition is a state in the Hilbert space like any other state. In fact, you can just change the basis and then it's no longer a superposition. It evolves unitary and causally like everything else. The existence of superpositions is perfectly compatible with superdeterminism. Best,<br /><br />B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-35787138287493121472014-01-12T02:15:37.776-05:002014-01-12T02:15:37.776-05:00
Sabine
What I mean is that in superdeterminism t...<br />Sabine<br /><br />What I mean is that in superdeterminism there is only one causal chain(if the multiverse theory is true it just means that the causal chain is bigger not that there are many causal chains). But for a particle to be in a superposition it must have the ability to jump between causal chains!<br /><br />Hope this clarify what i mean. BestAnonymoushttps://www.blogger.com/profile/06774330406587467567noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-77019952374918009882014-01-11T19:25:11.302-05:002014-01-11T19:25:11.302-05:00Sabine
Could be that your research is well known ...Sabine<br /><br />Could be that your research is well known by now and it has run out of steam. People are judgmental as you know. You have even refused to look at my website and you deleted the link because you did not want to "advertise" it. My website is purely informational and there is NOTHING in it that is worth advertising. Just an example. qsahttps://www.blogger.com/profile/08193989424656595346noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-15498285656442474632014-01-11T15:13:33.191-05:002014-01-11T15:13:33.191-05:00
Sabine
Determinism means that something follows ...<br />Sabine<br /><br />Determinism means that something follows the laws of cause and effect. A superposition doesn´t.<br /><br />Best Anonymoushttps://www.blogger.com/profile/06774330406587467567noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-23518586140198577272014-01-11T13:55:07.730-05:002014-01-11T13:55:07.730-05:00Hi Bee,
I somewhat surprised and shocked to learn...Hi Bee,<br />I somewhat surprised and shocked to learn that in Scandinavia also, its hard to get funding unless you work on trendy topics. kashyapa, I also disagree with you<br />about funding situation in US (in gravity). Almost all grant funding in gravity in USA is either for string theory or loop quantum gravity or calculating gravitational wave signal from binary black hole/binary neutron Shantanuhttps://www.blogger.com/profile/16322812456382858228noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-42095539910476781012014-01-11T12:28:54.543-05:002014-01-11T12:28:54.543-05:00@L. Edgar Otto
As usually, you are such a word ar...@L. Edgar Otto <br />As usually, you are such a word artist that I quite didn't understand everything you said :-) But I take your text with positive spin.<br /><br />Regarding my experiments, I think that there is something cooking at Fermilab related to my work, most likely antimatter experiment. I have got recently plenty of traffic from Fermilab. Whatever they are doing with my papers, itAnonymoushttps://www.blogger.com/profile/16842237142348106304noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-40951781069080496042014-01-11T11:45:50.602-05:002014-01-11T11:45:50.602-05:00Mats,
I still don't know what you mean or wha...Mats,<br /><br />I still don't know what you mean or what this has to do with superdeterminism. Causality depends on the metric structure of space-time.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-46616214055203569212014-01-11T10:57:35.734-05:002014-01-11T10:57:35.734-05:00
Sabine
Pardon my swedish- english, it should be ...<br />Sabine<br /><br />Pardon my swedish- english, it should be causal chain.<br /><br />Best MatsAnonymoushttps://www.blogger.com/profile/06774330406587467567noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-7340392983026476392014-01-11T09:37:48.200-05:002014-01-11T09:37:48.200-05:00Dear Arun,
Thanks for the offer, but nothing come...Dear Arun,<br /><br />Thanks for the offer, but nothing comes to mind. You're all helping just by being here and letting me know that what I do isn't entirely uninteresting :) Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-11435167306099059852014-01-11T09:35:59.645-05:002014-01-11T09:35:59.645-05:00Giotis,
Well, read my reply to Igor above (commen...Giotis,<br /><br />Well, read my reply to Igor above (comment #4). String theorists come to mind, but they're basically all working on AdS/CFT (incl Larus, who I am very sure doesn't read my blog). Best,<br /><br />B.Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-17401897844262793862014-01-11T09:31:31.181-05:002014-01-11T09:31:31.181-05:00Mats,
I have no clue what you mean with 'caus...Mats,<br /><br />I have no clue what you mean with 'causality chain'. Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-59710267136996116392014-01-11T03:55:52.622-05:002014-01-11T03:55:52.622-05:00Kimmo,
I reconsidered your experiments in the lig...Kimmo, <br />I reconsidered your experiments in the light of this QM Phenomenology debate. See Science Daily today on magnetic amplification extending local <br />Effects through space and the article on a return to analogue computers by magnetic effects similiar for photon curves in a plane. But really, guys, the depth of this superdeterministic Phenomenology is ill served by science<br />L. Edgar Ottohttps://www.blogger.com/profile/00525169618204198073noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-64870467801074580802014-01-10T22:48:24.785-05:002014-01-10T22:48:24.785-05:00@Captain InterStellar Doing research on one's ...@Captain InterStellar Doing research on one's spare time is brutal :-) Especially when you have a family with small children.Anonymoushttps://www.blogger.com/profile/16842237142348106304noreply@blogger.com