Hey there! Sign in to join this conversationNew here? Join for free

Theor./Particle: 4-vector notation (gradients, scalars, metrics) watch

    • Thread Starter
    Offline

    15
    ReputationRep:
    Not sure if this is the right area to post this, sorry!

    I'm doing a 3rd year Uni (Physics) module on Theoretical Elementary Particle Physics and this is the first time I've had to use 4-vector notation, which I've struggled with grasping.Can anyone recommend any good resources for understanding it? I've looked over my lecture notes and googled resources from other Unis but I keep getting lost amongst the notation!

    I don't quite understand the difference (or use) between metrics, gradients, and scalars. I understand them in the typical sense of course (scalars have no direction, gradients represent change.. not sure about metrics except in vague a space-time sense), just not in this new sense.

    Also, there's an exercise of making a scalar by using a contra-variant vector and a co-variant vector, but I am not sure how it shows that scalars are the same in all (or 2) frames of reference.

    Thanks for any help!
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.