Invarianz

Bavarian
PhD student in physics
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29 hr 55 min
  • Avatar for Invarianz
    started 90m timer
    Plan: Discussion with my Postdoc + more analytics
  • Avatar for Invarianz
    finished 30m timer
    Plan: Solve the intraband problem
    Result: There is an error in the integration.
    Feeling:
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    finished 15m timer
    Plan: Some more analytics.
    Result: Found an integration trick for the temperature dependence.
    Feeling:
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    finished 30m timer
    Plan: Complete the integral and see if it is analytically solvable.
    Result: The integral seems to be solvable. Need to get a symbolic maths program working.
    Feeling:
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    finished 30m timer
    Plan: Working on the intraband terms.
    Result: Crushing it today. Love you all <3
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    finished 30m timer
    Plan: Further replacements in the notation
    Result: Corrected all interband terms. Now need to complete the calculation for intraband terms.
    Feeling:
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    finished 25m timer
    Plan: Continue rewrite
    Result: Discussion about units, everything looks fine.
    Feeling:
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    finished 30m timer
    Plan: Incorporate changes in notation into PhD script.
    Result: Rewriting goes forward.
    Feeling:
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    finished 30m timer
    Plan: Let's goooo finally get the units right.
    Result: Interrupted
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    finished 30m timer
    Plan: See how to define the time in the conductivity to make it the same units as the energy.
    Result: Wow this is hard today. I need more focus.
    Feeling:
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    finished 30m timer
    Plan: Using realistic value for the conductivity to see how it behaves in real systems.
    Result: On the way, feeling super tense.
    Feeling:
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    finished 30m timer
    Plan: Finding the zero division error.
    Result: -
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    finished 30m timer
    Plan: Getting arccot in sympy, lambdifying it and looking at the complete conductivity structure.
    Result: Some error with zero division. Can't seem to find it now. Next session.
    Feeling:
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    finished 30m timer
    Plan: Working on the 3D plotting script.
    Result: Went well, let's go to finalize this.
    Feeling:
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    finished 25m timer
    Plan: Get the script working to see the Conductivity in 3D.
    Result: Got distracted but the 3D plots are working.
    Feeling:
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    finished 25m timer
    Plan: Completing the Appendix
    Result: Completed the equation in the Appendix and started writing the script to visualize the conductivity in 3D.
    Feeling:
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    finished 30m timer
    Plan: Still assembling the solutions
    Result: Distracted
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    finished 25m timer
    Plan: Assemble full conductivity from intra- and interband terms.
    Result: Wasted a lot of time on unimportant issues. Python errors etc..
    Feeling:
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    finished 25m timer
    Plan: Find agreement between hand written notes and Mathematica results. Afterwards write a script to visualize conductivity
    Result: On the way to include the thermal dependence to the conductivity. Next step is the script.
    Feeling:
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    finished 15m timer
    Plan: Get an overview of the results gained yesterday and complete the LaTeX formula.
    Result: Back into calculations. Making progress.
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    finished 30m timer
    Plan: Checking analytical conductivity against numerical results.
    Result: Just some minor sign mistake, should be easy to find.
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    finished 30m timer
    Plan: Continue integral
    Result: Found the solution in terms of logarithms.
    Feeling:
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    finished 30m timer
    Plan: Find the logarithm solution of the integral, then try to find a solution with Cauchys Residua theorem.
    Result: The integral is quite difficult but I'll manage.
    Feeling:
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    finished 30m timer
    Plan: Complete the integral. Understand the branch cuts in the logarithm and how the singularities affect the result.
    Result: Still hustling.
    Feeling:
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    finished 30m timer
    Plan: Find the value of the integral. Consider residuals.
    Result: The integral is nastier than I first thought. Need to figure out the conditional expression for the residuals.
    Feeling:
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    finished 30m timer
    Plan: Get back to work. Got super distracted by other duties and talking to my office mate. Back to the PhD thesis.
    Result: Got done with the Sommerfeld expansion part. Now continuing to the integral.
    Feeling:
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    finished 25m timer
    Plan: Further working on integrals.
    Result: Slow but steady progress.
    Feeling:
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    finished 25m timer
    Plan: Finish Appendix on Sommerfeld expansion and complete the conductivity integral.
    Result: Working on the Appendix, got a couple of equations done.
    Feeling:
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    finished 30m timer
    Plan: Continue writing done all equations in LaTeX document.
    Result: Roughly 1/3 through writing down everything. Feel super dedicated to finishing this today.
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    finished 25m timer
    Plan: Sommerfeld expansion is waiting for me <3
    Result: Writing, the text will be done today, afterwards more comparisons between densities.
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    finished 30m timer
    Plan: Some more writing.
    Result: Went well, underestimated the amount I need to write.
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    finished 25m timer
    Plan: Continuing with the Appendix.
    Result: Going well
    Feeling:
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    finished 30m timer
    Plan: Continue work on Sommerfelds expansion and find literature reference.
    Result: Found a good reference. Need to iron out a couple of referencing warnings before continuing.
    Feeling:
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    finished 30m timer
    Plan: Continue writing the Appendix on Sommerfelds expansion.
    Result: Got started with the Appendix. Need to find a proper literature reference for Sommerfeld expansion.
    Feeling:
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    finished 55m timer
    Plan: Write Sommerfeld expansion in PhD document.
    Result: Went good, checking all units to make sure it is right.
    Feeling:
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    finished 30m timer
    Plan: Going to write the Sommerfeld expansion currents into the thesis and adding an Appendix explaining the expansion technique.
    Result: Checked the initial current equations for errors and found none. Next step is writing the Sommerfeld expansion in LaTeX
    Feeling:
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    finished 25m timer
    Plan: Finish the Sommerfeld expansion in the densities and test the result against numerics.
    Result: I remember what the problem was. Going to work on it in the next session.
    Feeling:
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    finished 25m timer
    Plan: First short timer, completing the chapter now.
    Result: Ended the chapter. Super tired after lunch.
    Feeling:
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    finished 55m timer
    Plan: Finish the chapter on emission.
    Result: Looks good
    Feeling:
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    finished 55m timer
    Plan: Find the last missing unit normalization before moving onto Sommerfeld expansion.
    Result: Found the unit mistake. I need an additional volume norm in the current operator integral.
    Feeling:
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    finished 55m timer
    Plan: Complete the code introduction of the full emission. Proceed to finish the Sommerfeld expansion integrals.
    Result: Found another mistake in the units.
    Feeling:
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    finished 55m timer
    Plan: Read Burgdörfer Paper about the importance of the laser spot.
    Result: The paper does not say much about the real size of the laser spot. However, the argument of long wave lengths still holds.
    Feeling:
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    finished 30m timer
    Plan: There is a problem regarding sample size and wave length. Somehow need to strike the argument of small unit cells compared to sample size.
    Result: Understood that wavelength of the pulse is much bigger than I thought and that our sample sizes are quite sufficient.
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    finished 55m timer
    Plan: Completing the wave length approximation for the emission spectrum.
    Result: Was a bit distracted and still working on the problem.
    Feeling:
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    finished 55m timer
    Plan: Find out how a momentum derivative leads to a crystal momentum derivative in terms of units.
    Result: \hbar was missing in the paper definition due to atomic units. Units are the same!
    Feeling:
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    finished 55m timer
    Plan: Finish the unit equivalence problem with the relativistic emission.
    Result: Understood that time dependent currents still have the right units. Something is weird when going from momentum to crystal momentum.
    Feeling:
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    finished 55m timer
    Plan: Determine units of emission from Jans paper
    Result: I got one step closer to finding the right units and discussed transport physics with a colleague.
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    finished 55m timer
    Plan: Find sign error (PhD)
    Result: Found the sign error in thesis!
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    finished 55m timer
    Plan: Comparing Fourier Transformed Densities (PhD)
    Result: Not much progress, was caught up with vim..
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    finished 55m timer
    Plan: Still comparing Fourier Transforms (PhD)
    Result: Found the error in the Fourier transform (wrong unit conversion) (PhD)
    Feeling: