Five-Hundred-Year-Journey
Alexander Poltorak Abstract This essay addresses the anigmatic statement of the Jewish Sages, stating that G-d created this world with the letter Heh and the
August 11, 2025 / 17 Av 5785
1 Comment
Cosmology
Divine Fine-Tuning and the Evolution of Physical Laws
By Alexander Poltorak Introduction The relationship between the laws of physics and the conditions necessary for life is among the most profound mysteries in both
March 30, 2025 / 1 Nisan 5785
No Comments
Bet HaMikdash as a Singularity in Space-time
Introduction In this essay, I intend to draw a parallel between the singularity in space-time, such as the putative point of origin of the universe
August 14, 2024 / 10 Av 5784
1 Comment
The Cosmological Problem of Initial Conditions and the Universe of Tohu
Now the earth was unformed and void. Genesis 1:2 We have a big problem in cosmology: the problem of the initial conditions of the universe at
September 30, 2021 / 24 Tishri 5782
2 Comments
Noah’s Ark—Three Layers of Reality
A light shalt thou make to the ark…with lower, second, and third stories shalt thou make it. (Genesis 6:16) We mentioned in the previous posts
October 28, 2020 / 10 Heshvan 5781
1 Comment
Physics of Tzimtzum I — The Quantum Leap
Introduction “In the beginning G‑d created the heavens and the earth.” (Genesis 1:1) “In the beginning G‑d created the heavens and the earth,” the Torah
August 17, 2020 / 27 Av 5780
5 Comments
Cosmology and the Tetragrammaton
As we discussed in the previous post “Singularity and Paradise,” Paradise offers a beautiful metaphor for modern cosmology wherein Eden is the initial singularity preceding
January 18, 2020 / 21 Tevet 5780
2 Comments
Singularity and Paradise
These are the chronicles of the heaven and of the earth when they were created, in the day that the Eternal G‑d made earth and
January 16, 2020 / 19 Tevet 5780
1 Comment
Chanukah Menorah – the River of Time
In a Kabbalistic meditation on lighting Chanukah Menorah, the Arizal links the menorah lights with a supernal river (see Candle on the River). The Arizal’s
December 9, 2018 / 1 Tevet 5779
3 Comments
Big Bang
בְּרֵאשִׁית בָּרָא Genesis 1:1 The Torah starts with two words—Bereshit bara—“In the beginning, G‑d created…” (or, as Rashi translates it, “At the beginning of creation
October 30, 2016 / 28 Tishri 5777
8 Comments
Gravitational Waves – Listening to Chirping of the Cosmos
Gravitational waves discovered last year and announced last week are converted into sound waves giving the astronomers the ear into the cosmos. Characteristic sounds of
February 15, 2016 / 6 Adar I 5776
5 Comments
Black Holes and Gravitational Waves
A hole in Kabbalah is called “rah” (evil). The reason for that is, as content is lost due to a leakage through the hole, forces of
February 12, 2016 / 3 Adar I 5776
3 Comments
When was the World Created?
There is a dispute in the Talmud as to when the world was created. According to Rabbi Eliezer, the world was created in the month
January 25, 2016 / 15 Shevat 5776
6 Comments
Adam Kadmon and Holographic Universe
Dedicated to the memory of Professor Yaakob David Bekenstein The Torah opens with the word “Bereshit” – in the Beginning – whose first letter, Bet,
October 11, 2015 / 28 Tishri 5776
No Comments
Cosmological Rosh HaShanah
This Rosh HaShanah I had the strangest dream. I dreamed that I was giving a lecture in cosmology at a university when I suddenly realized
September 9, 2013 / 5 Tishri 5774
2 Comments
Two Beginnings
B’reshit bara Elokim et hashamaim v’et haaretz… In the beginning, G‑d created heaven and earth… Alternative translation: With two beginnings G‑d created heaven and earth…
October 12, 2012 / 26 Tishri 5773
4 Comments
On the Age of the Universe in the Many-Worlds Interpretation of Quantum Mechanics
On the Age of the Universe in the Many-Worlds Interpretation of Quantum Mechanics[*] Alexander Poltorak Abstract The present paper addresses the apparent discrepancy
September 15, 2012 / 28 Elul 5772
5 Comments
On the Nature of Time and the Age of the Universe
Presented at the International Torah and Science Conference in Miami International University on December 18, 2005 Alexander Poltorak Introduction. This is the third in
August 15, 2012 / 27 Av 5772
8 Comments
Towards Reconciliation of Biblical and Cosmological Ages of the Universe
Towards Reconciliation of Biblical and Cosmological Ages of the Universe[1] Alexander Poltorak Abstract Two opposite views of the age of the universe are considered.
August 15, 2012 / 27 Av 5772
10 Comments