Ultracold

Ultracold

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Probability Density
On being trans in 2025
 • 
Karmela Padavic Callaghan
Ultracold
A newsletter reintroduction
 • 
Karmela Padavic Callaghan
1
Carnot's Theorem
On riding the subway as an aspiring New Yorker
 • 
Karmela Padavic Callaghan
1
Time Crystal
On dressing as a way of maintaining a self
 • 
Karmela Padavic Callaghan
17
Imaginary Unit
On fantasies in the warming world
 • 
Karmela Padavic Callaghan
Dark Energy
On turning 33
 • 
Karmela Padavic Callaghan
6
Eigenstate Localization
On being tired
 • 
Karmela Padavic Callaghan
13
Phase Imprinting
On claiming the identity of being a writer
 • 
Karmela Padavic Callaghan
6
Wigner's Friend
On theorizing reality in the time of disasters and violence
 • 
Karmela Padavic Callaghan
Extra: Fluid Dynamics II
A yearly Pride conversation with my best friend
 • 
Karmela Padavic Callaghan
 and 
alex
3
Media/Diet (June '25)
The Bends by Radiohead + red wine mushroom stew
 • 
Karmela Padavic Callaghan
4
Media/Diet (May '25)
Trauma Plot: A Life by Jamie Hood + how to brew coffee the Croatian way
 • 
Karmela Padavic Callaghan
8
Quantum Supremacy
On spending time with thousands of physicists as quantum theory turns 100 years old
 • 
Karmela Padavic Callaghan
Extra: What Do We Mean When We Say That Baking is an Exact Science?
On a phrase that does a disservice to both baking and science
 • 
Karmela Padavic Callaghan
15
Ultracold
Ultracold
Notes on being a queer, immigrant, nobinary physicist-turned-writer, vegan baker living and working in New York.
Recommendations
radical love letters
radical love letters
Raechel Anne Jolie
Huw Lemmey's 'Utopian Drivel'
Huw Lemmey's 'Utopian Drivel'
Huw Lemmey
© 2025 Karmela Padavic Callaghan
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