I Restoring S.I. units to a Lagrangian in natural units

  • I
  • Thread starter Thread starter Precious Adegbite
  • Start date Start date
  • Tags Tags
    Lagrangian
AI Thread Summary
Restoring S.I. units to a Lagrangian in natural units involves understanding which quantities were excluded for simplification. The discussion clarifies that fundamental quantities are not omitted but rather quantities that relate different dimensions are. To restore S.I. units, one can either reintroduce the excluded quantities or apply specific scaling factors that align with the dimensions of the Lagrangian density. The choice between these methods depends on the context of the field being analyzed. Ultimately, the approach taken should ensure dimensional consistency in the Lagrangian formulation.
Precious Adegbite
Messages
6
Reaction score
4
TL;DR Summary
Restoring the Lagrangian units
If we have a natural unit Lagrangian, where some fundamental quantities have been excluded to ease calculations...and aim to restore it's S.I units back, do we just have to plug back the fundamental quantities that were initially excluded Into the Lagrangian...or we use some specific scaling factors corresponding to that field that has the same S.I units of Lagrangian density, and scale the unitless Lagrangian with it.
 
Physics news on Phys.org
"fundamental quantities" are not excluded in using natural units.
Only quantities relating two different dimensions are excluded.
 
Thread 'Is there a white hole inside every black hole?'

Thread 'Is there a white hole inside every black hole?'

This is what I am thinking. How much feasible is it? There is a white hole inside every black hole The white hole spits mass/energy out continuously The mass/energy that is spit out of a white hole drops back into it eventually. This is because of extreme space time curvature around the white hole Ironically this extreme space time curvature of the space around a white hole is caused by the huge mass/energy packed in the white hole Because of continuously spitting mass/energy which keeps...
View full post »

Thread 'Is Gravity an entropic property like Surface Tension'

Why do two separately floating objects in a liquid "attract" each other ?? What if gravity is an emergent property like surface tension ? What if they both are essentially trying to *minimize disorder at the interfaces — where non-aligned polarized particles are forced to mix with each other* What if gravity is an emergent property that is trying to optimize the entropy emerging out of spin aligned quantum bits
View full post »

Similar threads

I Confused about unit conversion involving natural units
Replies
2
Views
2K
I How do we justify "Natural" Units
Replies
9
Views
3K
I Is there a way in Lagrangian mechanics to incorporate the inertial response from initial momentum when using initial conditions instead of BCs?
Replies
9
Views
1K
I Are Planck Units Merely a Pop-Science Fad?
Replies
2
Views
2K
B Manipulating quantities with natural units
Replies
2
Views
4K
I Lagrangian Paradox: Uncovering an Issue
Replies
15
Views
3K
I How to Change Between Unit Systems w/ ##c \ne 1, \hbar \ne 1, G \ne 1##
Replies
4
Views
1K
I Checking if a stationary point is a minimum using Lagrangian Mechanics
Replies
1
Views
2K
I The new definition of kg and the mass-energy equivalence
Replies
4
Views
4K
B Why Do We Treat Units Like Variables in Physics?
Replies
10
Views
3K

Hot Threads

Recent Insights

Back
Top