
#1
Aug1611, 12:45 PM

P: 72

I'm assuming that the observer witnesses all other particles enter a horizon, be it an event horizon or the particle horizon. Thus the observer's observable universe would contain himself only. Is this understanding correct and can it happen in finite time? Also does such a universe have time (maximum entropy is achieved).




#2
Aug1611, 12:53 PM

Astronomy
Sci Advisor
PF Gold
P: 22,801

Forces hold stuff together, Edward. Depending on relative magnitudes, a galaxy like our Milky Way might remain intact.




#3
Aug1611, 01:10 PM

P: 72

EDIT: Assuming that proton decay is real. However if Proton decay is not real, can heat death be achieved in our Milky Galaxy, even as time elapsed goes to infinity? Or after a finite amount of time the Milky Way would be very cold but due to the Third Law of Thermodynamics, never reaches absolute zero (and thus there is always observable motion). Thus the Second Law predicts heath death, but the third law makes it asymptotic. 



#4
Aug1711, 12:01 AM

Sci Advisor
PF Gold
P: 9,182

How does Heat Death work in a universe with negative curvature?
What idea do you have in mind with respect to cosmological curvature? This looks like slapping the 'truth' out of a tuna to me.




#5
Aug1711, 02:42 AM

P: 72

http://en.wikipedia.org/wiki/Big_Rip 


Register to reply 
Related Discussions  
Reflection in a mirror of negative curvature  General Physics  1  
The death of universe  Cosmology  58  
The conservation of energy, why does it work? Negative work vs positive work  Introductory Physics Homework  54  
negative curvature  General Math  14 