The Secrets of Feynman Diagrams | Space Time
Δημοσιεύτηκε στις 26 Ιουλ 2017
Unlock
the secrets of Feynman Diagrams. Part 5 in our Quantum Field Theory
series. And if you're submitting an answer to our challenge question
email your answer by August 2nd to pbsspacetime [AT] gmail.com with the
subject line "Feynman Diagram Challenge."
You can further support us on Patreon at https://www.patreon.com/pbsspacetime
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Previous Episode:
The Real Star Wars
https://www.youtube.com/watch?v=Q8shn...
Feynman’s
path integral shows us that, to properly calculate the probability of a
particle traveling from point A to point B, we need to add up the
contributions from all conceivable paths between those points –
including the impossible paths! In fact we can go even further:
according to Feynman’s approach, every conceivable happening that leads
from a measured initial state to a measured final state DOES in a sense
happen. To calculate the probability of any quantum system evolving from
one state into any other state we need to sum over every conceivable
intermediate state. This is impossible because there are infinite
possible intermediate states.
Written and Hosted by Matt O’Dowd
Produced by Rusty Ward
Graphics by Kurt Ross
Assistant Editing and Sound Design by Mike Petrow
Made by Kornhaber Brown (www.kornhaberbrown.com)
Comments answer by Matt:
Superphilipp
https://www.youtube.com/watch?v=Q8shn...
Lewinham
https://www.youtube.com/watch?v=Q8shn...
Myrmidon
https://www.youtube.com/watch?v=Q8shn...
Sure people love Star Wars. But I think they missed a golden opportunity to call the project Ronald Ray-gun.
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang
CoolAsCats
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Quasar
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Josh
Mark Rosenthal
Dean Fuqua
Hypernova
Chuck Zegar
Jordan Young
Ratfeast
John Hofmann
Joseph Salomone
Martha Hunt
Craig Peterson
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Barry Hatfield
Thanks to our Patreon Gamma Ray Burst Supporters:
Peter Durocher
Michael Kers
Chris Hicks
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Sultan Alkhulaifi
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Bernardo Higuera
Erik Stein
Daniel Lyons
Kevin Warne
JJ Bagnell
J Rejc
Amy Jie
Avi Goldfinger
John Pettit
Shannan Catalano
Florian Stinglmayr
Yubo Du
Benoit Pagé-Guitard
Nathan Leniz
Jessica Fraley
Loro Lukic
Brandon Labonte
David Crane
Greg Weiss
the secrets of Feynman Diagrams. Part 5 in our Quantum Field Theory
series. And if you're submitting an answer to our challenge question
email your answer by August 2nd to pbsspacetime [AT] gmail.com with the
subject line "Feynman Diagram Challenge."
You can further support us on Patreon at https://www.patreon.com/pbsspacetime
Get your own Space Time tshirt at http://bit.ly/1QlzoBi
Tweet at us! @pbsspacetime
Facebook: facebook.com/pbsspacetime
Email us! pbsspacetime [at] gmail [dot] com
Comment on Reddit: http://www.reddit.com/r/pbsspacetime
Help translate our videos! https://www.youtube.com/timedtext_cs_...
Previous Episode:
The Real Star Wars
https://www.youtube.com/watch?v=Q8shn...
Feynman’s
path integral shows us that, to properly calculate the probability of a
particle traveling from point A to point B, we need to add up the
contributions from all conceivable paths between those points –
including the impossible paths! In fact we can go even further:
according to Feynman’s approach, every conceivable happening that leads
from a measured initial state to a measured final state DOES in a sense
happen. To calculate the probability of any quantum system evolving from
one state into any other state we need to sum over every conceivable
intermediate state. This is impossible because there are infinite
possible intermediate states.
Written and Hosted by Matt O’Dowd
Produced by Rusty Ward
Graphics by Kurt Ross
Assistant Editing and Sound Design by Mike Petrow
Made by Kornhaber Brown (www.kornhaberbrown.com)
Comments answer by Matt:
Superphilipp
https://www.youtube.com/watch?v=Q8shn...
Lewinham
https://www.youtube.com/watch?v=Q8shn...
Myrmidon
https://www.youtube.com/watch?v=Q8shn...
Sure people love Star Wars. But I think they missed a golden opportunity to call the project Ronald Ray-gun.
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang
CoolAsCats
Shane Robinson
David Nicklas
Eugene Lawson
Joshua Davis
Quasar
Tambe Barsbay
Max Levine
Mayank M. Mehrota
Mars Yentur
Josh
Mark Rosenthal
Dean Fuqua
Hypernova
Chuck Zegar
Jordan Young
Ratfeast
John Hofmann
Joseph Salomone
Martha Hunt
Craig Peterson
Science Via Markets
Barry Hatfield
Thanks to our Patreon Gamma Ray Burst Supporters:
Peter Durocher
Michael Kers
Chris Hicks
Mark Vasile
Patrick Murray
Justin Lloyd
Sultan Alkhulaifi
Alex Seto
Conor Dillon
Jared Moore
Michal-Peanut Karmi
Bernardo Higuera
Erik Stein
Daniel Lyons
Kevin Warne
JJ Bagnell
J Rejc
Amy Jie
Avi Goldfinger
John Pettit
Shannan Catalano
Florian Stinglmayr
Yubo Du
Benoit Pagé-Guitard
Nathan Leniz
Jessica Fraley
Loro Lukic
Brandon Labonte
David Crane
Greg Weiss
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