# Search results

1. ### The number of states for N identical particles with energy between E and E+dE

the answer is NE^0.5 but my answer is E^0.5N the # of state is Ω=( one particle phase-space volume)^N one particle phase-space volume=integration of dq*integration of dp from space part dq I get V and dp is converted into Energy E variable via E=p^2/2m
2. ### Multipole expansion for the case r'>>r and r>>r'

for the case, r>>r' the higher-order term like 1/r^2 and above that is negligible. so V(r)=cons.*1/r*P0(cos a) but for the case r'>>r will it be V(r)=cons.*1/r'[ summation Pn(cos a')t'^n] where t'=r/r' now if we neglect higher-order term of r/r' then V(r)=cons.*1/r'*P0(cos a') which is...
3. ### A Pauli's spin matrices in higher order

What are the rules to write Pauli's spin matrices in higher-order matrices (especially in 4x4 matrices)
4. ### I Dirac's gamma matrices

what are Dirac's gamma matrices . especially , does it have many forms?
5. ### MATLAB Book for a the beginner

please refer me a good book for the Matlab beginner.
6. ### Book recommendations for second quantization and Jellium model

please refer me a good book for the detail step by step study on the second quantization. and also where can I find the jellium model for the metal?
7. ### Good books on Group theory in High Energy physics

please suggest me a good book on the high energy physics where group theory is discussed for the beginner.
8. ### Advanced condensed matter physics book

what are the good books on advanced condensed matter physics with detail notation explained?
9. ### Quantum What is a good book for Hartree-Fock theory?

where can I find the thoroughly discussed Hartree and Hartree-Fock method for many electrons system?
10. ### I Difference between δ and ∆ variation?

what is the difference between δ- variation and ∆-variation in variational principle, used in classical mechanics?
11. ### I What is the velocity of light in uniformly rotating frame?

S'-frame of reference has uniform angular velocity with respect to the frame S. what is the velocity of light in S frame w.r.t S' ?
12. ### Consider the potential field V(x, y) which is 0 and -Vo(Vo>0

Homework Statement Consider the potential field V(x, y) which is 0 and -Vo (V0 > 0) respectively in the regions of y greater and less than zero . Let θ and θ' be the angles of incidence and refraction of the particle with the y-axis at the point of incidence as it crosses the x-axis . The ratio...
13. ### Correct option for n dependence of free energy f per unit

Homework Statement The equation of state of an ideal gas is p = nkT, where p is the thermodynamic pressure and n = N / V is the thermodynamic variable for the number of particles per unit volume. The n dependence of the free energy f per unit volume of the ideal gas is obtained by the following...
14. ### A 300 MHz plane wave propagating through a non-conducting medium

Homework Statement A 300 MHz plane wave propagating through a non-conducting medium having relative permeability= 1, relative permittivity= 78.What is the velocity of light in this medium? Homework Equations The Attempt at a Solution n=√(78) v=c/n =3*108/√78[/B]
15. ### I The dielectric constant of water is 80, but refractive index

The dielectric constant of water is 80, however its refractive index is 1 ·33 invalidating the expression n*n=ε. why?