Recent content by SEYED2001

Dear all, many thanks for your replies. For the gravitational collapse in big slurp (which is what I am interested in), please see the articles by Coleman, Sidney; De Luccia, Frank (1980-06-15). "Gravitational effects on and of vacuum decay". I was thinking (maybe wrongly) that is a...

True, but I am interested in the gravitational collapse that happens inside a bubble of true vaccume in a bug slurp and not a big crunch, with the former taking place in a matter of seconds to milliseconds.

Thanks for your response, but this entire "big crunch" would happen in a matter of seconds in the bubble so I am wondering what happens from the start to the end of the collapse and not just its end.

I recently asked a question about the geological consequences of a "big slurp", in which a true vacuum bubble is formed and propopogates at speed of light. Apparently, in this bubble there is a gravitational collapse (https://handwiki.org/wiki/Physics:False_vacuum) so I was wondering what would...

Thank you very much for your answers! I can see that my intuition was wrong. I was hoping that inside the boundaries of big slurp there would be a "big crunch", so that as new stars and planets get in the boundaries they undergo a gravitational "fall" into a singularity, where the slurp began.

Dear all, many thanks for your replies! I am aware that there could be no forewarning, so it is totally unpredictable. But my main concern is about what happens WHEN (and not BEFORE) this boundary reaches earth.

One possibility for the ultimate fate of our universe is so called the "big slurp", which to my limited knowledge is some sort of quantum phase transition related to Higg's field (see: https://en.m.wikipedia.org/wiki/Ultimate_fate_of_the_universe OR...

Thank you all for helping me! I can now Kind of see what the sentence actually means and why it is there. Thank you once again 😁 Seyed

Dear Arne Thank you for your detailed, comprehensive answer one more time. So your answer indeed helped me get a better understanding, but they don't directly answer my very specific question. So maybe I have to be straight in what I think. I have concluded from your two previous responses...

Thank you so much for your response. I went through the slides and I could learn about density matrices which I didn't know before (I already knew about relative phase). However, I couldn't answer my question even with this new knowledge! Maybe because my question is based on ambiguity in what...

Dear Arne Thank you very much for your response! So I can understand somehow the relationship between control and coherency is via knowing the relative phase. However, I cannot yet understand how is it so. More accurately: 1. If lack of control means measuring in only the four basis you have...

There we read: "note that if Wigner did not know this phase due to the lack of control of it, he would describe the “spin + friend’s laboratory” in an incoherent mixture of the two possibilities". Why is this the case? Given that the author has propoede neither a citation nor a proof for this...

Thank you!

I can see that I am being given general answers. This maybe in part due to my inaccurate question. In fact I can make my question more accurate. Imagine you already have a field with some known dimensions and geometry as your candidate and want to check if this actually is a grand unified...

In addition, I wonder if there is a definite list of phenomena one's model need to encapsulate in his/her theory in order to unify weak, strong and EM fields.