Recent content by m1rohit

Homework Statement I want to know wether the component [itex]\omega_{c}^{ab}[itex] of the spin connection is zero or not? Homework Equations [itex]de^{a}=-\omega^{a}_{b}\wedge e^{b}[itex] The Attempt at a Solution [itex]de^{a}=-\omega^{a}_{b}\wedge e^{b}[itex]...

Homework Statement I want to know the expression for the round metric of an n-sphere of radius r Homework Equations I have obtained this for a 3-sphere dS^{2}=dr^{2}+r^{2}(d\theta_{1}^{2}+sin^{2}\theta_{1}d\theta_{2}^{2} +sin^{2}\theta_{1}sin^{2}\theta_{2}d\theta_{3}^{2}) The...

I am doing a project on string theory and my first task is to work out fundamental string solution from the I(10) string action in NS sector.I am following A.Dahbolkar, G.Gibbons, J.A.Harvey & F.Ruiz Ruiz, Nuclear Physics B340 (1990) 33—55. Why is it called fundamental string? I have not taken...

Sir(Bill_K), can you give me some reference on this topic.

thank you your guidance is very encouraging

oh it is taken from a excellent book named concept and application of quantum mechanics by Nouredine Zettili.this book is easily available you can check it yourself

what are the research prospect of doing a phd on string theory in India

Thanks for your reply.But I failed to understand a thing.Please be a little descriptive.

you should use right hand thumb rule while calculating cross products.In this case you can also work with pointing your right thumb along the direction of the current then the way your fingers curl to form a fist is the direction of the field.clock wise concentric circles from top.

Best of luck

when the magnet falls through the coil a current will be produced according to Faraday's law as has been stated earlier .I wanted to add that this current will be such that(anticlock wise from top) it will create a magnetic field along the axis of the solenoid which will oppose the motion of the...

This is the problem of forced oscillation you can get it in any book on oscillation or acoustics

I think is correct but you should further use Lenz's law which will specify the direction of the current.

I don't know if this will help you should go through Introduction to Quantum Mechanics by D.J.Griffiths 2 ed page 108-110

I Thought this will be helpful I have attached two pdf files.problem 4.2 in the pdf named uncertainty will give you the actual uncertainty relation for your problem and the second pdf file will show you that how this uncertainty results in zero point energy.