tag:blogger.com,1999:blog-2267942296540125935.post6695971548125271934..comments2023-10-22T02:21:26.410-07:00Comments on QuantumMechanicsDemystified: String Theory and the Size of Fundamental ParticlesGNHhttp://www.blogger.com/profile/15180342767762548292noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-2267942296540125935.post-87566744754434955872008-09-08T15:26:00.000-07:002008-09-08T15:26:00.000-07:00I don't think that is necessary for the basic ...I don't think that is necessary for the basic ideas of the theory, extension in space gets rid of the gravitational infinities. That being said, people have explored modified uncertainty relations involving time, including a proposal that delta_x * delta_t >= ls^2 where ls is the fundamental length scale. But I don't know if this introduces any concept of a "time string" as you describe it. I will post a link to a paper that discusses this, but note that is very advanced.GNHhttps://www.blogger.com/profile/15180342767762548292noreply@blogger.comtag:blogger.com,1999:blog-2267942296540125935.post-33635192555404559882008-09-08T15:10:00.000-07:002008-09-08T15:10:00.000-07:00I asked the original question cited above, and now...I asked the original question cited above, and now I have another for Dr. McMahon. On pp.9-10 of String Theory Demystified you note that replacing a point particle with a 1-D string helps avoid infinities in the calculations. And you appeal to the uncertainty relation involving position & momentum. Could one use a similar line of argument to say that time should be restricted to a finite minimum size as well ("time strings") by appeal to the energy-time uncertainty relation? Whys should only the spatial components have string-like characteristics, and not the time dimension? Thanks in advance.Anonymousnoreply@blogger.com