For a harmonic oscillator the partition function is q=x1/2/(1−x) where x=exp(−ℏω/kBT) Determine dx/dβ. Knowing this and...
For a harmonic oscillator the partition function is q=x1/2/(1−x) where x=exp(−ℏω/kBT)
- Determine dx/dβ.
- Knowing this and the result dβ/dT=−1/kBT2, determine expressions for 〈E〉 and CV for a harmonic oscillator
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For a harmonic oscillator the partition function is q=x1/2/(1−x)
where x=exp(−ℏω/kBT)
Determine dx/dβ.
Knowing this and...
The most general wave function of a particle in the simple harmonic oscillator potential is: V(x,...
The most general wave function of a particle in the simple harmonic oscillator potential is: V(x, t) = (x)e-1st/ where and E, are the harmonic oscillator's stationary states and their corresponding energies. (a) Show that the expectation value of position is (hint: use the results of Problem 4): (v) = A cos (wt - ) where the real constants A and o are given by: 1 2 Ae-id-1 " Entichtin Interpret this result, comparing it with the motion of a...
PROBLEM 1 5 points] In classical statistical mechanics, the canonical partition function for a single harmonic...
PROBLEM 1 5 points] In classical statistical mechanics, the canonical partition function for a single harmonic oscillator is of the form d dp e Δ ΔΊΔ ) is the regulating spatial and momentum resolution cutoffs, which are often Chosen to be at the scale of the atoms (and n) and are important for making entropy dimensionless but they drop out in parts (b) and (c). Moreover, Z factorizes as Z ZzZp with Z. 3 Calculate the partition function and the...
Consider the harmonic oscillator wave function 1/4 where α = (-)"*. Here k, is the stiffness...
Consider the harmonic oscillator wave function 1/4 where α = (-)"*. Here k, is the stiffness coefficient of the oscillator and m is mass. Recall that the oscillation frequency iso,s:,k, / m In class we showed that Ψ0(x) Is an eigenfunction of the Hamiltonian, with an eigenvalue Eo (1/2)ha a) Normalize the wave function in Eq.(1) b) Graph the probability density. Note that a has units of length and measures the "width" of the wave function. It's easier to use...
1. The energy levels of a quantum harmonic oscillator are given by E Planck constant, w...
1. The energy levels of a quantum harmonic oscillator are given by E Planck constant, w is the frequency of oscillation and n-0,1,2, Determine the following: (a) Show that the one-particle partition function is given by 211-exp-Bhu) oan 1 (1 Hint you will need to use the following formula for a geometric progression: (b) Show that the internal energy is given by (c) Show that the Helmoltz free energy is given by 1 In(1 exp Bha) (d) Show that the...
5. A particle in the harmonic oscillator potential has the initial wave function Psi(x, 0) = A[\psi_{0}(x) + \psi_{1}(x)] for some constant A. Here to and ₁ are the normalized ground state and the first excited state wavefunctions of the harmonic oscill
5. A particle in the harmonic oscillator potential has the initial wave function Psi(x, 0) = A[\psi_{0}(x) + \psi_{1}(x)] for some constant A. Here to and ₁ are the normalized ground state and the first excited state wavefunctions of the harmonic oscillator, respectively. (a) Normalize (r, 0). (b) Find the wavefunction (r, t) at a later time t and hence evaluate (x, t) 2. Leave your answers involving expressions in to and ₁. c) sing the following normalized expression of...
1) Wave function for the ground state of an harmonic oscillator is given by. (x) =...
1) Wave function for the ground state of an harmonic oscillator is given by. (x) = A1/2 (a/T)1/4 e-ax /2 Evaluate the expectation value <x<> for this wave state (ove (Hint: Joo.co u² e-a u du = 2;. ue-au du = (1/2a) (Tc/a)2) pace)
Estimate the ground-state energy of a one-dimensional simple harmonic oscillator using (50) = e-a-l as a...
Estimate the ground-state energy of a one-dimensional simple harmonic oscillator using (50) = e-a-l as a trial function with a to be varied. For a simple harmonic oscillator we have H + jmwºr? Recall that, for the variational method, the trial function (HO) gives an expectation value of H such that (016) > Eo, where Eo is the ground state energy. You may use: n! dH() ||= TH(c) – z[1 – H(r)], 8(2), dx S." arcade an+1 where (x) and...
a) Show that the wave function y(x) = N exp( – x²/(2a?)) with a? = ()...
a) Show that the wave function y(x) = N exp( – x²/(2a?)) with a? = () is a solution of the Schrödinger equation for harmonic oscillator with potential V(x) = k x2/2. (10 pt) b) What is the energy of harmonic oscillator with the wave function y(x) in terms of k and m? (5 pt) c) Sketch the potential energy of harmonic oscillator, the energy level corresponding to y(x), the wave function (x), and the probability density associated with y(x)...
The lowest energy wavefunction of the quantum harmonic oscillator has the form (c) Determine σ an...
The lowest energy wavefunction of the quantum harmonic oscillator has the form (c) Determine σ and Eo (the energy of this lowest-energy wavefunction) by using the time-independent Schrödinger equation (H/Ho(x)- E/Ho(x) In Lecture 3, we found that the solution for a classical harmonic oscillator displaced from equilibrium by an amount o and released at rest was x(t)cos(wt) (d) Classically, what is the momentum of this harmonic oscillator as a function of time? (e) Show that 〈z) (expectation value of x)...
answer is C why ? 2. The harmonic oscillator in the figure has a position function...
answer is C why ?
2. The harmonic oscillator in the figure has a position function x(t) A cos(at + φ), where A = 6 cm, what is the phase constant φ? A) 70.5o or 70.5° B) 109.5° or 199.5° C) 109.5° D) 199.5° E) none of the above x (cm)
The most general wave function of a particle in the simple harmonic oscillator potential is: V(x, t) = (x)e-1st/ where and E, are the harmonic oscillator's stationary states and their corresponding energies. (a) Show that the expectation value of position is (hint: use the results of Problem 4): (v) = A cos (wt - ) where the real constants A and o are given by: 1 2 Ae-id-1 " Entichtin Interpret this result, comparing it with the motion of a...
PROBLEM 1 5 points] In classical statistical mechanics, the canonical partition function for a single harmonic oscillator is of the form d dp e Δ ΔΊΔ ) is the regulating spatial and momentum resolution cutoffs, which are often Chosen to be at the scale of the atoms (and n) and are important for making entropy dimensionless but they drop out in parts (b) and (c). Moreover, Z factorizes as Z ZzZp with Z. 3 Calculate the partition function and the...
Consider the harmonic oscillator wave function 1/4 where α = (-)"*. Here k, is the stiffness coefficient of the oscillator and m is mass. Recall that the oscillation frequency iso,s:,k, / m In class we showed that Ψ0(x) Is an eigenfunction of the Hamiltonian, with an eigenvalue Eo (1/2)ha a) Normalize the wave function in Eq.(1) b) Graph the probability density. Note that a has units of length and measures the "width" of the wave function. It's easier to use...
1. The energy levels of a quantum harmonic oscillator are given by E Planck constant, w is the frequency of oscillation and n-0,1,2, Determine the following: (a) Show that the one-particle partition function is given by 211-exp-Bhu) oan 1 (1 Hint you will need to use the following formula for a geometric progression: (b) Show that the internal energy is given by (c) Show that the Helmoltz free energy is given by 1 In(1 exp Bha) (d) Show that the...
1) Wave function for the ground state of an harmonic oscillator is given by. (x) = A1/2 (a/T)1/4 e-ax /2 Evaluate the expectation value <x<> for this wave state (ove (Hint: Joo.co u² e-a u du = 2;. ue-au du = (1/2a) (Tc/a)2) pace)
Estimate the ground-state energy of a one-dimensional simple harmonic oscillator using (50) = e-a-l as a trial function with a to be varied. For a simple harmonic oscillator we have H + jmwºr? Recall that, for the variational method, the trial function (HO) gives an expectation value of H such that (016) > Eo, where Eo is the ground state energy. You may use: n! dH() ||= TH(c) – z[1 – H(r)], 8(2), dx S." arcade an+1 where (x) and...
a) Show that the wave function y(x) = N exp( – x²/(2a?)) with a? = () is a solution of the Schrödinger equation for harmonic oscillator with potential V(x) = k x2/2. (10 pt) b) What is the energy of harmonic oscillator with the wave function y(x) in terms of k and m? (5 pt) c) Sketch the potential energy of harmonic oscillator, the energy level corresponding to y(x), the wave function (x), and the probability density associated with y(x)...
The lowest energy wavefunction of the quantum harmonic oscillator has the form (c) Determine σ and Eo (the energy of this lowest-energy wavefunction) by using the time-independent Schrödinger equation (H/Ho(x)- E/Ho(x) In Lecture 3, we found that the solution for a classical harmonic oscillator displaced from equilibrium by an amount o and released at rest was x(t)cos(wt) (d) Classically, what is the momentum of this harmonic oscillator as a function of time? (e) Show that 〈z) (expectation value of x)...
answer is C why ?
2. The harmonic oscillator in the figure has a position function x(t) A cos(at + φ), where A = 6 cm, what is the phase constant φ? A) 70.5o or 70.5° B) 109.5° or 199.5° C) 109.5° D) 199.5° E) none of the above x (cm)
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