Problem 1. Consider a system of three identical particles. Each particle has 5 quantum states with...
1. Consider a quantum system comprising three indistinguishable particles which can occupy only three individual-particle energy levels, with energies ε,-0, ε,-2e and ε,-3. The system is in thermal equilibrium at temperature T. Suppose the particles are bosons with integer spin. i) How many states do you expect this system to have? Justify your answer [2 marks] (ii) Make a table showing, for each state of this system, the energy of the state, the number of particles (M, M,, N) with...
16 , Eo Problem 1 (8 pts): An experimentalist is examining a kind of non-interacting identical particles that could be either spinless bosons or spin-half fermions by putting a number of them inside a potential and measuring the energy levels of the system, but without being able to resolve the degeneracy of each level. Energy levels do not depend on the particles' spin. The following values of the energy are observed: No particles: 0 -5€ 1 particle: E, 2E, 5E...
Question 9 Consider a quantum system comprising two indistinguishable particles which can occupy only three individual-particle energy levels, with energies 81 0, 82 2 and E3 38.The system is in thermal equilibrium at temperature T. (a) Suppose the particles which can occupy an energy level. are spinless, and there is no limit to the number of particles (i) How many states do you expect this system to have? Justify your answer (ii) Make a table showing, for each state of...
2. Two noninteracting particles, each of mass m, are in the 1-D harmonic oscillator potential Describe their ground state and the next two excited states, that is, their corresponding (i) wave functions, (i) energy eigenvalues, and (ii) degeneracies if two particles are (a) distinguishable particles, (b) the identical bosons, and (c) the identical fermions. 3. Suppose one particle is in the ground state, and the other is in the first excited state for tw particles described in Prob. 2. Calculate...
6. Consider a quantum system of N particles with only three possible states to oc- cupy for each particle. The energy values of these states are equal to 0, €and €3, respectively. (a) [10 points) You observe that the probability to sample eash state is P = 0.9. P2 = 0.09 and p = 0.01 at T = 300 K. What are the energies and c? Recall that the probability to occupy state is proportional to where k= 1.38 x...
1. Imagine that a particle can exist in one of the three states: |0 > , |1 >, |2> . We now consider 2 such particles. How many distinguishable states are possible if the particles are (a) distinguishable (b) indistinguishable, classic (c) bosons (d) fermions. Write down the wave function of the system for all cases.
6. Consider a quantum system of N particles with only three possible states to oc cupy for each particle. The energy values of these states are equal to 0, E and 3, respectively. (a) (10 points) You observe that the probability to sample eash state is p=0.9, P2 = 0.09 and p = 0.01 at T = 300 K. What are the energies ez and ez? Recall that the probability to occupy 4th state is proportional to e«/T where k...
the wavefunction 4. Given two identical particles 1 & 2, and two quantum states ve and of the combined system is given as a determinant of the following array V2 Va(12) 40(12) Are the particles Bosons or Fermions? (2 points)
Q.7) Consider a systems of N>>1 identical, distinguishable and independent particles that can be placed in three energy levels of energies 0, E and 2€, respectively. Only the level of energy sis degenerate, of degeneracy g=2. This system is in equilibrium with a heat reservoir at temperature T. a) Obtain the partition function of the system. b) What is the probability of finding each particle in each energy level? c) Calculate the average energy <B>, the specific heat at constant...
statistical mechanics 6. A system has 10 distinguishable particles and 3 energy levels. The top energy level is doubly degenerate with ε=3E and is occupied by 3 particles. The second level is triply degenerate with ε 2E and is occupied by 5 particles. The lowest level is non-degenerate with ε1-E and is occupied by 2 particles. Obtain the partition function for the system. Calculate the number of microstates