El tiempo no es una línea.
Es un territorio.
Explora la física que deforma el presente, las paradojas que desafían la causalidad y las historias que han convertido el viaje temporal en la gran pregunta de la ciencia ficción.
Entre las ecuaciones y lo imposible
No ofrecemos respuestas fáciles. Reunimos las ideas más fértiles de la relatividad, la cosmología y la física cuántica para distinguir lo matemáticamente permitido de lo tecnológicamente inalcanzable.
Wormholes
Atajos hipotéticos a través del espacio-tiempo y el delicado problema de mantener abierta su garganta.
Time dilation
Why two observers can measure different durations and how we already observe this effect every day.
Chronology and causality
Paradoxes, closed time curves, and the mechanisms with which physics tries to protect the past.
Closed time-like curves
Space-time trajectories that return to their own past and turn causality into a circle.
Gödel universe
A cosmos in rotation where Einstein's equations allow paths capable of returning to the past.
Exotic matter
The hypothetical negative energy that could sustain a wormhole without its throat collapsing.
Retrocausality
Quantum models in which future conditions seem to participate in the description of previous events.
Casimir effect
A measurable manifestation of the quantum vacuum and its possible relationship with negative energy densities.
Parallel universes
The possibility that each temporal decision opens a different branch and avoids modifying the past of origin.
Dilatación por velocidad
Special relativity allows us to move into the future by making a fast traveler's clock accumulate less time.
Cilindro de Tipler
An extreme solution based on a rotating cylinder that drags space-time to form closed time trajectories.
Kerr black holes
The ideal geometry of a rotating black hole contains acausal regions, although they are hidden behind horizons and instabilities.
Cosmic strings
Hypothetical cosmological defects whose relative motion could tilt light cones and produce time loops.
Flecha del tiempo y entropía
The physical reason why we remember the past and not the future, and the obstacle it imposes on any temporal reversal.
Alcubierre metric
A bubble of curvature that contracts space in front and expands it behind, with profound consequences for energy and causality.
Krasnikov tube
A modified space-time corridor during the outward journey that would allow the return time to be drastically reduced.
Ori Time Machine
A geometry with a compact toroidal core where closed temporal curves would appear after an initially causal phase.
Deutsch quantum curves
A quantum information model that imposes a self-consistent state on any system that interacts with its own past.
Post-selection curves
A formulation based on quantum teleportation and selection of consistent results, different from Deutsch's model.
Three questions that change our idea of the present
Can the future influence the past?
Retrocausality appears in certain quantum interpretations, but it does not equate to sending messages to yesterday. Separating both ideas is essential.
Does the cause survive a loop?
Closed time-like curves allow trajectories that return to their own origin and force us to rethink what a consistent story means.
Is there only a single timeline?
Parallel universes offer an elegant narrative outlet for paradoxes, although they remain a conjecture, not a buildable machine.
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