UM Math Graduate Students Seminar

Carlos Vega
University of Miami

will present

Walkable Spacetimes

Friday, February 25, 2011, 2:30pm
Ungar Building Room 506


Abstract:As you read this abstract, a dragon is stealing your baby! He will leave a note saying where to meet him tomorrow to exchange the child for a, very reasonable, ransom of $5. After panhandling for the rest of the evening, you will raise the necessary funds and arrive at the meeting place the next day to find the dragon waiting for you with baby in hand. You will take a step towards the dragon, but something strange will happen; The distance between you will increase! You'll take another step towards him but will end up farther still! You will run towards the dragon at full speed only to see him shrink away into the horizon, along with the child you will never see again. ... Space does change size and shape over time; COULD THIS HAPPEN TO *YOUR* BABY???!!! (... Is spacetime 'walkable'?)


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